50172920 has 64 divisors (see below), whose sum is σ = 135820800. Its totient is φ = 16295040.

The previous prime is 50172887. The next prime is 50172989. The reversal of 50172920 is 2927105.

It is a self number, because there is not a number n which added to its sum of digits gives 50172920.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 605 + ... + 10035.

It is an arithmetic number, because the mean of its divisors is an integer number (2122200).

Almost surely, 2^50172920 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 50172920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67910400).

50172920 is an abundant number, since it is smaller than the sum of its proper divisors (85647880).

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

50172920 is a wasteful number, since it uses less digits than its factorization.

50172920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9468 (or 9464 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 26.

The square root of 50172920 is about 7083.2845488516. The cubic root of 50172920 is about 368.8273563651.

The spelling of 50172920 in words is "fifty million, one hundred seventy-two thousand, nine hundred twenty".