51577372 has 48 divisors (see below), whose sum is σ = 113379840. Its totient is φ = 19944000.

The previous prime is 51577333. The next prime is 51577411. The reversal of 51577372 is 27377515.

It is an interprime number because it is at equal distance from previous prime (51577333) and next prime (51577411).

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, 45954 + ... + 47062.

It is an arithmetic number, because the mean of its divisors is an integer number (2362080).

Almost surely, 2^51577372 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51577372, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56689920).

51577372 is an abundant number, since it is smaller than the sum of its proper divisors (61802468).

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

51577372 is a wasteful number, since it uses less digits than its factorization.

51577372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1282 (or 1280 counting only the distinct ones).

The product of its digits is 51450, while the sum is 37.

The square root of 51577372 is about 7181.7387866728. The cubic root of 51577372 is about 372.2371690672.

The spelling of 51577372 in words is "fifty-one million, five hundred seventy-seven thousand, three hundred seventy-two".