51257304 has 48 divisors (see below), whose sum is σ = 158655120. Its totient is φ = 14644800.

The previous prime is 51257293. The next prime is 51257347. The reversal of 51257304 is 40375215.

It is a happy number.

It is a super-2 number, since 2×51257304² = 5254622426696832, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 50347 + ... + 51354.

It is an arithmetic number, because the mean of its divisors is an integer number (3305315).

Almost surely, 2^51257304 is an apocalyptic number.

It is an amenable number.

51257304 is an abundant number, since it is smaller than the sum of its proper divisors (107397816).

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

51257304 is a wasteful number, since it uses less digits than its factorization.

51257304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101720 (or 101713 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 51257304 is about 7159.4206469518. The cubic root of 51257304 is about 371.4655871253.

The spelling of 51257304 in words is "fifty-one million, two hundred fifty-seven thousand, three hundred four".