51164686 has 16 divisors (see below), whose sum is σ = 78123024. Its totient is φ = 25127424.

The previous prime is 51164653. The next prime is 51164693. The reversal of 51164686 is 68646115.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31240 + ... + 32836.

It is an arithmetic number, because the mean of its divisors is an integer number (4882689).

Almost surely, 2^51164686 is an apocalyptic number.

51164686 is a deficient number, since it is larger than the sum of its proper divisors (26958338).

51164686 is a wasteful number, since it uses less digits than its factorization.

51164686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1875.

The product of its digits is 34560, while the sum is 37.

The square root of 51164686 is about 7152.9494615858. The cubic root of 51164686 is about 371.2417156642.

The spelling of 51164686 in words is "fifty-one million, one hundred sixty-four thousand, six hundred eighty-six".