51057636 has 48 divisors (see below), whose sum is σ = 143324160. Its totient is φ = 13819680.

The previous prime is 51057607. The next prime is 51057637. The reversal of 51057636 is 63675015.

It is a junction number, because it is equal to n+sod(n) for n = 51057597 and 51057606.

It is not an unprimeable number, because it can be changed into a prime (51057637) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14400 + ... + 17591.

It is an arithmetic number, because the mean of its divisors is an integer number (2985920).

Almost surely, 2^51057636 is an apocalyptic number.

It is an amenable number.

51057636 is an abundant number, since it is smaller than the sum of its proper divisors (92266524).

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

51057636 is a wasteful number, since it uses less digits than its factorization.

51057636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32024 (or 32022 counting only the distinct ones).

The product of its (nonzero) digits is 18900, while the sum is 33.

The square root of 51057636 is about 7145.4626162342. The cubic root of 51057636 is about 370.9826230651.

The spelling of 51057636 in words is "fifty-one million, fifty-seven thousand, six hundred thirty-six".