51136692 has 12 divisors (see below), whose sum is σ = 119318976. Its totient is φ = 17045560.

The previous prime is 51136667. The next prime is 51136711. The reversal of 51136692 is 29663115.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×51136692² = 5229922537405728, which contains 22 as substring.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors.

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, 2130684 + ... + 2130707.

It is an arithmetic number, because the mean of its divisors is an integer number (9943248).

Almost surely, 2^51136692 is an apocalyptic number.

It is an amenable number.

51136692 is an abundant number, since it is smaller than the sum of its proper divisors (68182284).

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

51136692 is a wasteful number, since it uses less digits than its factorization.

51136692 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4261398 (or 4261396 counting only the distinct ones).

The product of its digits is 9720, while the sum is 33.

The square root of 51136692 is about 7150.9923786842. The cubic root of 51136692 is about 371.1739968439.

The spelling of 51136692 in words is "fifty-one million, one hundred thirty-six thousand, six hundred ninety-two".