51575120 has 40 divisors (see below), whose sum is σ = 126227040. Its totient is φ = 19543680.

The previous prime is 51575113. The next prime is 51575123. The reversal of 51575120 is 2157515.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 51575120.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51575123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15446 + ... + 18485.

It is an arithmetic number, because the mean of its divisors is an integer number (3155676).

Almost surely, 2^51575120 is an apocalyptic number.

It is an amenable number.

51575120 is an abundant number, since it is smaller than the sum of its proper divisors (74651920).

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

51575120 is a wasteful number, since it uses less digits than its factorization.

51575120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33963 (or 33957 counting only the distinct ones).

The product of its (nonzero) digits is 1750, while the sum is 26.

The square root of 51575120 is about 7181.5819984179. The cubic root of 51575120 is about 372.2317513794.

The spelling of 51575120 in words is "fifty-one million, five hundred seventy-five thousand, one hundred twenty".