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80121050 = 2523151691
BaseRepresentation
bin1001100011010…
…00110011011010
312120202120102022
410301220303122
5131002333200
611541134442
71662006032
oct461506332
9176676368
1080121050
1141254149
12229ba422
13137a3509
14a8d88c2
157079885
hex4c68cda

80121050 has 24 divisors (see below), whose sum is σ = 153835392. Its totient is φ = 31014000.

The previous prime is 80121049. The next prime is 80121059. The reversal of 80121050 is 5012108.

It is not an unprimeable number, because it can be changed into a prime (80121059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24296 + ... + 27395.

It is an arithmetic number, because the mean of its divisors is an integer number (6409808).

Almost surely, 280121050 is an apocalyptic number.

80121050 is a deficient number, since it is larger than the sum of its proper divisors (73714342).

80121050 is a wasteful number, since it uses less digits than its factorization.

80121050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51734 (or 51729 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 17.

The square root of 80121050 is about 8951.0362528592. The cubic root of 80121050 is about 431.1041570827.

Adding to 80121050 its reverse (5012108), we get a palindrome (85133158).

The spelling of 80121050 in words is "eighty million, one hundred twenty-one thousand, fifty".

Divisors: 1 2 5 10 25 31 50 62 155 310 775 1550 51691 103382 258455 516910 1292275 1602421 2584550 3204842 8012105 16024210 40060525 80121050