51512560 has 40 divisors (see below), whose sum is σ = 130656816. Its totient is φ = 18731520.

The previous prime is 51512557. The next prime is 51512563. The reversal of 51512560 is 6521515.

It is an interprime number because it is at equal distance from previous prime (51512557) and next prime (51512563).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51512563) 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, 28389 + ... + 30148.

Almost surely, 2^51512560 is an apocalyptic number.

It is an amenable number.

51512560 is an abundant number, since it is smaller than the sum of its proper divisors (79144256).

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

51512560 is a wasteful number, since it uses less digits than its factorization.

51512560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58561 (or 58555 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 25.

The square root of 51512560 is about 7177.2250905207. The cubic root of 51512560 is about 372.0811862732.

The spelling of 51512560 in words is "fifty-one million, five hundred twelve thousand, five hundred sixty".