51313710 has 32 divisors (see below), whose sum is σ = 140746752. Its totient is φ = 11728800.

The previous prime is 51313697. The next prime is 51313721. The reversal of 51313710 is 1731315.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 121966 + ... + 122385.

It is an arithmetic number, because the mean of its divisors is an integer number (4398336).

Almost surely, 2^51313710 is an apocalyptic number.

51313710 is an abundant number, since it is smaller than the sum of its proper divisors (89433042).

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

51313710 is a wasteful number, since it uses less digits than its factorization.

51313710 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244368.

The product of its (nonzero) digits is 315, while the sum is 21.

The square root of 51313710 is about 7163.3588490316. The cubic root of 51313710 is about 371.6017967001.

The spelling of 51313710 in words is "fifty-one million, three hundred thirteen thousand, seven hundred ten".