50720831 has 12 divisors (see below), whose sum is σ = 59152320. Its totient is φ = 43364160.

The previous prime is 50720807. The next prime is 50720837. The reversal of 50720831 is 13802705.

It is not a de Polignac number, because 50720831 - 2¹⁸ = 50458687 is a prime.

It is a super-2 number, since 2×50720831² = 5145205394661122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 50720831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50720837) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22391 + ... + 24551.

It is an arithmetic number, because the mean of its divisors is an integer number (4929360).

Almost surely, 2^50720831 is an apocalyptic number.

50720831 is a deficient number, since it is larger than the sum of its proper divisors (8431489).

50720831 is a wasteful number, since it uses less digits than its factorization.

50720831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2654 (or 2647 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 50720831 is about 7121.8558676794. The cubic root of 50720831 is about 370.1650858152.

The spelling of 50720831 in words is "fifty million, seven hundred twenty thousand, eight hundred thirty-one".