50516881 has 4 divisors (see below), whose sum is σ = 50584372. Its totient is φ = 50449392.

The previous prime is 50516863. The next prime is 50516903. The reversal of 50516881 is 18861505.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 43441281 + 7075600 = 6591^2 + 2660^2 .

It is a cyclic number.

It is not a de Polignac number, because 50516881 - 2⁵ = 50516849 is a prime.

It is a super-2 number, since 2×50516881² = 5103910531936322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50516821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32610 + ... + 34123.

It is an arithmetic number, because the mean of its divisors is an integer number (12646093).

Almost surely, 2^50516881 is an apocalyptic number.

It is an amenable number.

50516881 is a deficient number, since it is larger than the sum of its proper divisors (67491).

50516881 is an equidigital number, since it uses as much as digits as its factorization.

50516881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67490.

The product of its (nonzero) digits is 9600, while the sum is 34.

The square root of 50516881 is about 7107.5228455489. The cubic root of 50516881 is about 369.6682709703.

The spelling of 50516881 in words is "fifty million, five hundred sixteen thousand, eight hundred eighty-one".