51085624 has 32 divisors (see below), whose sum is σ = 97920000. Its totient is φ = 24979680.

The previous prime is 51085607. The next prime is 51085627. The reversal of 51085624 is 42658015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51085627) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 102127 + ... + 102625.

It is an arithmetic number, because the mean of its divisors is an integer number (3060000).

Almost surely, 2^51085624 is an apocalyptic number.

It is an amenable number.

51085624 is a deficient number, since it is larger than the sum of its proper divisors (46834376).

51085624 is a wasteful number, since it uses less digits than its factorization.

51085624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 763 (or 759 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 31.

The square root of 51085624 is about 7147.4207935450. The cubic root of 51085624 is about 371.0503972241.

The spelling of 51085624 in words is "fifty-one million, eighty-five thousand, six hundred twenty-four".