51693264 has 60 divisors (see below), whose sum is σ = 165339616. Its totient is φ = 14769216.

The previous prime is 51693253. The next prime is 51693269. The reversal of 51693264 is 46239615.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51693269) 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, 24634 + ... + 26649.

Almost surely, 2^51693264 is an apocalyptic number.

It is an amenable number.

51693264 is an abundant number, since it is smaller than the sum of its proper divisors (113646352).

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

51693264 is a wasteful number, since it uses less digits than its factorization.

51693264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51304 (or 51295 counting only the distinct ones).

The product of its digits is 38880, while the sum is 36.

The square root of 51693264 is about 7189.8027789363. The cubic root of 51693264 is about 372.5157604851.

The spelling of 51693264 in words is "fifty-one million, six hundred ninety-three thousand, two hundred sixty-four".