51257924 has 12 divisors (see below), whose sum is σ = 94978044. Its totient is φ = 24121344.

The previous prime is 51257917. The next prime is 51257929. The reversal of 51257924 is 42975215.

It can be written as a sum of positive squares in 2 ways, for example, as 42016324 + 9241600 = 6482^2 + 3040^2 .

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (51257929) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 376829 + ... + 376964.

It is an arithmetic number, because the mean of its divisors is an integer number (7914837).

Almost surely, 2^51257924 is an apocalyptic number.

It is an amenable number.

51257924 is a deficient number, since it is larger than the sum of its proper divisors (43720120).

51257924 is a wasteful number, since it uses less digits than its factorization.

51257924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 753814 (or 753812 counting only the distinct ones).

The product of its digits is 25200, while the sum is 35.

The square root of 51257924 is about 7159.4639464139. The cubic root of 51257924 is about 371.4670848483.

The spelling of 51257924 in words is "fifty-one million, two hundred fifty-seven thousand, nine hundred twenty-four".