51512532 has 12 divisors (see below), whose sum is σ = 120195936. Its totient is φ = 17170840.

The previous prime is 51512491. The next prime is 51512557. The reversal of 51512532 is 23521515.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2146344 + ... + 2146367.

It is an arithmetic number, because the mean of its divisors is an integer number (10016328).

Almost surely, 2^51512532 is an apocalyptic number.

It is an amenable number.

51512532 is an abundant number, since it is smaller than the sum of its proper divisors (68683404).

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

51512532 is a wasteful number, since it uses less digits than its factorization.

51512532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4292718 (or 4292716 counting only the distinct ones).

The product of its digits is 1500, while the sum is 24.

The square root of 51512532 is about 7177.2231399059. The cubic root of 51512532 is about 372.0811188574.

The spelling of 51512532 in words is "fifty-one million, five hundred twelve thousand, five hundred thirty-two".