51590520 has 80 divisors (see below), whose sum is σ = 173412360. Its totient is φ = 13756608.

The previous prime is 51590477. The next prime is 51590521. The reversal of 51590520 is 2509515.

51590520 is a `hidden beast` number, since 51 + 5 + 90 + 520 = 666.

51590520 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51590521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 4722 + ... + 11201.

Almost surely, 2^51590520 is an apocalyptic number.

It is an amenable number.

51590520 is an abundant number, since it is smaller than the sum of its proper divisors (121821840).

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

51590520 is a wasteful number, since it uses less digits than its factorization.

51590520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15946 (or 15933 counting only the distinct ones).

The product of its (nonzero) digits is 2250, while the sum is 27.

The square root of 51590520 is about 7182.6541055518. The cubic root of 51590520 is about 372.2687963636.

The spelling of 51590520 in words is "fifty-one million, five hundred ninety thousand, five hundred twenty".