51693072 has 40 divisors (see below), whose sum is σ = 140571360. Its totient is φ = 16323840.

The previous prime is 51693067. The next prime is 51693077. The reversal of 51693072 is 27039615.

It is an interprime number because it is at equal distance from previous prime (51693067) and next prime (51693077).

It is not an unprimeable number, because it can be changed into a prime (51693077) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27429 + ... + 29252.

It is an arithmetic number, because the mean of its divisors is an integer number (3514284).

Almost surely, 2^51693072 is an apocalyptic number.

It is an amenable number.

51693072 is an abundant number, since it is smaller than the sum of its proper divisors (88878288).

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

51693072 is a wasteful number, since it uses less digits than its factorization.

51693072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56711 (or 56705 counting only the distinct ones).

The product of its (nonzero) digits is 11340, while the sum is 33.

The square root of 51693072 is about 7189.7894266800. The cubic root of 51693072 is about 372.5152992830.

The spelling of 51693072 in words is "fifty-one million, six hundred ninety-three thousand, seventy-two".