50991320 has 32 divisors (see below), whose sum is σ = 115380720. Its totient is φ = 20280960.

The previous prime is 50991301. The next prime is 50991323. The reversal of 50991320 is 2319905.

It is a super-2 number, since 2×50991320² = 5200229430684800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50991323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3719 + ... + 10761.

Almost surely, 2^50991320 is an apocalyptic number.

It is an amenable number.

50991320 is an abundant number, since it is smaller than the sum of its proper divisors (64389400).

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

50991320 is a wasteful number, since it uses less digits than its factorization.

50991320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7235 (or 7231 counting only the distinct ones).

The product of its (nonzero) digits is 2430, while the sum is 29.

The square root of 50991320 is about 7140.8206811262. The cubic root of 50991320 is about 370.8219370595.

The spelling of 50991320 in words is "fifty million, nine hundred ninety-one thousand, three hundred twenty".