51531692 has 12 divisors (see below), whose sum is σ = 95485320. Its totient is φ = 24250176.

The previous prime is 51531679. The next prime is 51531731. The reversal of 51531692 is 29613515.

51531692 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 378842 + ... + 378977.

It is an arithmetic number, because the mean of its divisors is an integer number (7957110).

Almost surely, 2^51531692 is an apocalyptic number.

It is an amenable number.

51531692 is a deficient number, since it is larger than the sum of its proper divisors (43953628).

51531692 is a wasteful number, since it uses less digits than its factorization.

51531692 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 757840 (or 757838 counting only the distinct ones).

The product of its digits is 8100, while the sum is 32.

The square root of 51531692 is about 7178.5577938748. The cubic root of 51531692 is about 372.1272447887.

The spelling of 51531692 in words is "fifty-one million, five hundred thirty-one thousand, six hundred ninety-two".