51313386 has 16 divisors (see below), whose sum is σ = 105130368. Its totient is φ = 16687200.

The previous prime is 51313373. The next prime is 51313397. The reversal of 51313386 is 68331315.

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, 104050 + ... + 104541.

It is an arithmetic number, because the mean of its divisors is an integer number (6570648).

Almost surely, 2^51313386 is an apocalyptic number.

51313386 is an abundant number, since it is smaller than the sum of its proper divisors (53816982).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51313386 is a wasteful number, since it uses less digits than its factorization.

51313386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208637.

The product of its digits is 6480, while the sum is 30.

The square root of 51313386 is about 7163.3362339067. The cubic root of 51313386 is about 371.6010145879.

The spelling of 51313386 in words is "fifty-one million, three hundred thirteen thousand, three hundred eighty-six".