51701868 has 48 divisors (see below), whose sum is σ = 134453760. Its totient is φ = 17181072.

The previous prime is 51701857. The next prime is 51701917. The reversal of 51701868 is 86810715.

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 52105 + ... + 53087.

It is an arithmetic number, because the mean of its divisors is an integer number (2801120).

Almost surely, 2^51701868 is an apocalyptic number.

It is an amenable number.

51701868 is an abundant number, since it is smaller than the sum of its proper divisors (82751892).

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

51701868 is a wasteful number, since it uses less digits than its factorization.

51701868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1483 (or 1475 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 36.

The square root of 51701868 is about 7190.4011014685. The cubic root of 51701868 is about 372.5364269288.

The spelling of 51701868 in words is "fifty-one million, seven hundred one thousand, eight hundred sixty-eight".