51252504 has 16 divisors (see below), whose sum is σ = 128131320. Its totient is φ = 17084160.

The previous prime is 51252469. The next prime is 51252527. The reversal of 51252504 is 40525215.

It is a happy number.

It is a hoax number, since the sum of its digits (24) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 2135521 = 51252504 / (5 + 1 + 2 + 5 + 2 + 5 + 0 + 4).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1067737 + ... + 1067784.

Almost surely, 2^51252504 is an apocalyptic number.

It is an amenable number.

51252504 is an abundant number, since it is smaller than the sum of its proper divisors (76878816).

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

51252504 is a wasteful number, since it uses less digits than its factorization.

51252504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2135530 (or 2135526 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 24.

The square root of 51252504 is about 7159.0854164481. The cubic root of 51252504 is about 371.4539914414.

Adding to 51252504 its reverse (40525215), we get a palindrome (91777719).

The spelling of 51252504 in words is "fifty-one million, two hundred fifty-two thousand, five hundred four".