50718881 has 4 divisors (see below), whose sum is σ = 50845764. Its totient is φ = 50592000.

The previous prime is 50718853. The next prime is 50718901. The reversal of 50718881 is 18881705.

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 33744481 + 16974400 = 5809^2 + 4120^2 .

It is a cyclic number.

It is not a de Polignac number, because 50718881 - 2¹⁸ = 50456737 is a prime.

It is a super-2 number, since 2×50718881² = 5144809779784322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50717881) 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, 62840 + ... + 63641.

It is an arithmetic number, because the mean of its divisors is an integer number (12711441).

Almost surely, 2^50718881 is an apocalyptic number.

It is an amenable number.

50718881 is a deficient number, since it is larger than the sum of its proper divisors (126883).

50718881 is a wasteful number, since it uses less digits than its factorization.

50718881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126882.

The product of its (nonzero) digits is 17920, while the sum is 38.

The square root of 50718881 is about 7121.7189638457. The cubic root of 50718881 is about 370.1603419972.

The spelling of 50718881 in words is "fifty million, seven hundred eighteen thousand, eight hundred eighty-one".