50507881 has 4 divisors (see below), whose sum is σ = 50523264. Its totient is φ = 50492500.

The previous prime is 50507857. The next prime is 50507917. The reversal of 50507881 is 18870505.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 18870505 = 5 ⋅3774101.

It is a cyclic number.

It is not a de Polignac number, because 50507881 - 2⁷ = 50507753 is a prime.

It is a super-2 number, since 2×50507881² = 5102092086220322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50507851) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 565 + ... + 10066.

It is an arithmetic number, because the mean of its divisors is an integer number (12630816).

Almost surely, 2^50507881 is an apocalyptic number.

It is an amenable number.

50507881 is a deficient number, since it is larger than the sum of its proper divisors (15383).

50507881 is a wasteful number, since it uses less digits than its factorization.

50507881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15382.

The product of its (nonzero) digits is 11200, while the sum is 34.

The square root of 50507881 is about 7106.8896853687. The cubic root of 50507881 is about 369.6463165135.

The spelling of 50507881 in words is "fifty million, five hundred seven thousand, eight hundred eighty-one".