51185612 has 6 divisors (see below), whose sum is σ = 89574828. Its totient is φ = 25592804.

The previous prime is 51185599. The next prime is 51185653. The reversal of 51185612 is 21658115.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6398198 + ... + 6398205.

It is an arithmetic number, because the mean of its divisors is an integer number (14929138).

Almost surely, 2^51185612 is an apocalyptic number.

It is an amenable number.

51185612 is a deficient number, since it is larger than the sum of its proper divisors (38389216).

51185612 is a wasteful number, since it uses less digits than its factorization.

51185612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12796407 (or 12796405 counting only the distinct ones).

The product of its digits is 2400, while the sum is 29.

The square root of 51185612 is about 7154.4120652923. The cubic root of 51185612 is about 371.2923205240.

The spelling of 51185612 in words is "fifty-one million, one hundred eighty-five thousand, six hundred twelve".