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50505050 = 25273101137
BaseRepresentation
bin1100000010101…
…0010101011010
310112000220220102
43000222111122
5100412130200
65002255402
71152200021
oct300522532
9115026812
1050505050
1126566212
1214ab7562
13a60425b
1469c98b8
1546796d5
hex302a55a

50505050 has 48 divisors (see below), whose sum is σ = 96871032. Its totient is φ = 19584000.

The previous prime is 50505047. The next prime is 50505053. The reversal of 50505050 is 5050505.

Adding to 50505050 its reverse (5050505), we get a palindrome (55555555).

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (50505047) and next prime (50505053).

It can be written as a sum of positive squares in 12 ways, for example, as 17131321 + 33373729 = 4139^2 + 5777^2 .

It is an alternating number because its digits alternate between odd and even.

50505050 is an undulating number in base 10.

50505050 is a modest number, since divided by 505050 gives 50 as remainder.

It is not an unprimeable number, because it can be changed into a prime (50505053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 368582 + ... + 368718.

Almost surely, 250505050 is an apocalyptic number.

50505050 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

50505050 is a deficient number, since it is larger than the sum of its proper divisors (46365982).

50505050 is a wasteful number, since it uses less digits than its factorization.

50505050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323 (or 318 counting only the distinct ones).

The product of its (nonzero) digits is 625, while the sum is 20.

The square root of 50505050 is about 7106.6905096536. The cubic root of 50505050 is about 369.6394100780.

The spelling of 50505050 in words is "fifty million, five hundred five thousand, fifty".

Divisors: 1 2 5 10 25 50 73 101 137 146 202 274 365 505 685 730 1010 1370 1825 2525 3425 3650 5050 6850 7373 10001 13837 14746 20002 27674 36865 50005 69185 73730 100010 138370 184325 250025 345925 368650 500050 691850 1010101 2020202 5050505 10101010 25252525 50505050