51576636 has 24 divisors (see below), whose sum is σ = 120461824. Its totient is φ = 17175600.

The previous prime is 51576619. The next prime is 51576661. The reversal of 51576636 is 63667515.

It is a junction number, because it is equal to n+sod(n) for n = 51576594 and 51576603.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22311 + ... + 24513.

Almost surely, 2^51576636 is an apocalyptic number.

It is an amenable number.

51576636 is an abundant number, since it is smaller than the sum of its proper divisors (68885188).

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

51576636 is a wasteful number, since it uses less digits than its factorization.

51576636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4161 (or 4159 counting only the distinct ones).

The product of its digits is 113400, while the sum is 39.

The square root of 51576636 is about 7181.6875454172. The cubic root of 51576636 is about 372.2353984725.

The spelling of 51576636 in words is "fifty-one million, five hundred seventy-six thousand, six hundred thirty-six".