51258160 has 20 divisors (see below), whose sum is σ = 119175408. Its totient is φ = 20503232.

The previous prime is 51258157. The next prime is 51258161. The reversal of 51258160 is 6185215.

It is a tau number, because it is divible by the number of its divisors (20).

It is not an unprimeable number, because it can be changed into a prime (51258161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 320284 + ... + 320443.

Almost surely, 2^51258160 is an apocalyptic number.

It is an amenable number.

51258160 is an abundant number, since it is smaller than the sum of its proper divisors (67917248).

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

51258160 is a wasteful number, since it uses less digits than its factorization.

51258160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 640740 (or 640734 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 28.

The square root of 51258160 is about 7159.4804280758. The cubic root of 51258160 is about 371.4676549462.

The spelling of 51258160 in words is "fifty-one million, two hundred fifty-eight thousand, one hundred sixty".