51531662 has 32 divisors (see below), whose sum is σ = 96768000. Its totient is φ = 20036448.

The previous prime is 51531659. The next prime is 51531679. The reversal of 51531662 is 26613515.

51531662 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 8339 + ... + 13137.

It is an arithmetic number, because the mean of its divisors is an integer number (3024000).

Almost surely, 2^51531662 is an apocalyptic number.

51531662 is a deficient number, since it is larger than the sum of its proper divisors (45236338).

51531662 is a wasteful number, since it uses less digits than its factorization.

51531662 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4880.

The product of its digits is 5400, while the sum is 29.

The square root of 51531662 is about 7178.5557043182. Note that the first 3 decimals coincide. The cubic root of 51531662 is about 372.1271725754.

The spelling of 51531662 in words is "fifty-one million, five hundred thirty-one thousand, six hundred sixty-two".