51589972 has 24 divisors (see below), whose sum is σ = 105698880. Its totient is φ = 21570240.

The previous prime is 51589969. The next prime is 51590009. The reversal of 51589972 is 27998515.

It is a super-3 number, since 3×51589972³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21322 + ... + 23617.

It is an arithmetic number, because the mean of its divisors is an integer number (4404120).

Almost surely, 2^51589972 is an apocalyptic number.

It is an amenable number.

51589972 is an abundant number, since it is smaller than the sum of its proper divisors (54108908).

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

51589972 is a wasteful number, since it uses less digits than its factorization.

51589972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44991 (or 44989 counting only the distinct ones).

The product of its digits is 226800, while the sum is 46.

The square root of 51589972 is about 7182.6159579919. The cubic root of 51589972 is about 372.2674782659.

The spelling of 51589972 in words is "fifty-one million, five hundred eighty-nine thousand, nine hundred seventy-two".