50931881 has 64 divisors (see below), whose sum is σ = 75188736. Its totient is φ = 33177600.

The previous prime is 50931857. The next prime is 50931901. The reversal of 50931881 is 18813905.

It is a cyclic number.

It is not a de Polignac number, because 50931881 - 2⁶ = 50931817 is a prime.

It is a super-2 number, since 2×50931881² = 5188113004396322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (50931841) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 697661 + ... + 697733.

It is an arithmetic number, because the mean of its divisors is an integer number (1174824).

Almost surely, 2^50931881 is an apocalyptic number.

It is an amenable number.

50931881 is a deficient number, since it is larger than the sum of its proper divisors (24256855).

50931881 is a wasteful number, since it uses less digits than its factorization.

50931881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162.

The product of its (nonzero) digits is 8640, while the sum is 35.

The square root of 50931881 is about 7136.6575509828. The cubic root of 50931881 is about 370.6777958282.

The spelling of 50931881 in words is "fifty million, nine hundred thirty-one thousand, eight hundred eighty-one".