51764236 has 12 divisors (see below), whose sum is σ = 91144312. Its totient is φ = 25723008.

The previous prime is 51764213. The next prime is 51764243. The reversal of 51764236 is 63246715.

It is a happy number.

It is a super-2 number, since 2×51764236² = 5359072257327392, which contains 22 as substring.

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, 39045 + ... + 40348.

Almost surely, 2^51764236 is an apocalyptic number.

It is an amenable number.

51764236 is a deficient number, since it is larger than the sum of its proper divisors (39380076).

51764236 is a wasteful number, since it uses less digits than its factorization.

51764236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79560 (or 79558 counting only the distinct ones).

The product of its digits is 30240, while the sum is 34.

The square root of 51764236 is about 7194.7366873291. The cubic root of 51764236 is about 372.6861637210.

The spelling of 51764236 in words is "fifty-one million, seven hundred sixty-four thousand, two hundred thirty-six".