51693752 has 16 divisors (see below), whose sum is σ = 105737400. Its totient is φ = 23497120.

The previous prime is 51693739. The next prime is 51693757. The reversal of 51693752 is 25739615.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51693757) 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 3 ways as a sum of consecutive naturals, for example, 293627 + ... + 293802.

Almost surely, 2^51693752 is an apocalyptic number.

It is an amenable number.

51693752 is an abundant number, since it is smaller than the sum of its proper divisors (54043648).

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

51693752 is a wasteful number, since it uses less digits than its factorization.

51693752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 587446 (or 587442 counting only the distinct ones).

The product of its digits is 56700, while the sum is 38.

The square root of 51693752 is about 7189.8367158093. The cubic root of 51693752 is about 372.5169327017.

The spelling of 51693752 in words is "fifty-one million, six hundred ninety-three thousand, seven hundred fifty-two".