51370872 has 64 divisors (see below), whose sum is σ = 155416320. Its totient is φ = 13813248.

The previous prime is 51370867. The next prime is 51370897. The reversal of 51370872 is 27807315.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6138 + ... + 11849.

It is an arithmetic number, because the mean of its divisors is an integer number (2428380).

Almost surely, 2^51370872 is an apocalyptic number.

It is an amenable number.

51370872 is an abundant number, since it is smaller than the sum of its proper divisors (104045448).

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

51370872 is a wasteful number, since it uses less digits than its factorization.

51370872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18020 (or 18016 counting only the distinct ones).

The product of its (nonzero) digits is 11760, while the sum is 33.

The square root of 51370872 is about 7167.3476265631. The cubic root of 51370872 is about 371.7397300731.

The spelling of 51370872 in words is "fifty-one million, three hundred seventy thousand, eight hundred seventy-two".