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51270050 = 2521378877
BaseRepresentation
bin1100001110010…
…1000110100010
310120110210021202
43003211012202
5101111120200
65030521202
71161534236
oct303450642
9116423252
1051270050
1126a38a47
1215206202
13a811510
146b485c6
15477b1d5
hex30e51a2

51270050 has 24 divisors (see below), whose sum is σ = 102699156. Its totient is φ = 18930240.

The previous prime is 51270031. The next prime is 51270053. The reversal of 51270050 is 5007215.

It can be written as a sum of positive squares in 6 ways, for example, as 6901129 + 44368921 = 2627^2 + 6661^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (51270053) 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 11 ways as a sum of consecutive naturals, for example, 38789 + ... + 40088.

Almost surely, 251270050 is an apocalyptic number.

51270050 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

51270050 is an abundant number, since it is smaller than the sum of its proper divisors (51429106).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51270050 is a wasteful number, since it uses less digits than its factorization.

51270050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78902 (or 78897 counting only the distinct ones).

The product of its (nonzero) digits is 350, while the sum is 20.

The square root of 51270050 is about 7160.3107474466. The cubic root of 51270050 is about 371.4963749845.

Adding to 51270050 its reverse (5007215), we get a palindrome (56277265).

The spelling of 51270050 in words is "fifty-one million, two hundred seventy thousand, fifty".

Divisors: 1 2 5 10 13 25 26 50 65 130 325 650 78877 157754 394385 788770 1025401 1971925 2050802 3943850 5127005 10254010 25635025 51270050