51715746 has 24 divisors (see below), whose sum is σ = 116201904. Its totient is φ = 17238420.

The previous prime is 51715709. The next prime is 51715747. The reversal of 51715746 is 64751715.

It is a self number, because there is not a number n which added to its sum of digits gives 51715746.

It is not an unprimeable number, because it can be changed into a prime (51715747) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 52720 + ... + 53691.

It is an arithmetic number, because the mean of its divisors is an integer number (4841746).

Almost surely, 2^51715746 is an apocalyptic number.

51715746 is an abundant number, since it is smaller than the sum of its proper divisors (64486158).

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

51715746 is a wasteful number, since it uses less digits than its factorization.

51715746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106428 (or 106416 counting only the distinct ones).

The product of its digits is 29400, while the sum is 36.

The square root of 51715746 is about 7191.3660732854. The cubic root of 51715746 is about 372.5697564661.

The spelling of 51715746 in words is "fifty-one million, seven hundred fifteen thousand, seven hundred forty-six".