50979881 has 2 divisors, whose sum is σ = 50979882. Its totient is φ = 50979880.

The previous prime is 50979871. The next prime is 50979893. The reversal of 50979881 is 18897905.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49224256 + 1755625 = 7016^2 + 1325^2 .

It is a cyclic number.

It is not a de Polignac number, because 50979881 - 2¹⁰ = 50978857 is a prime.

It is a super-2 number, since 2×50979881² = 5197896533548322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (50979871) 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 as a sum of consecutive naturals, namely, 25489940 + 25489941.

It is an arithmetic number, because the mean of its divisors is an integer number (25489941).

Almost surely, 2^50979881 is an apocalyptic number.

It is an amenable number.

50979881 is a deficient number, since it is larger than the sum of its proper divisors (1).

50979881 is an equidigital number, since it uses as much as digits as its factorization.

50979881 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 181440, while the sum is 47.

The square root of 50979881 is about 7140.0196778440. The cubic root of 50979881 is about 370.7942058733.

The spelling of 50979881 in words is "fifty million, nine hundred seventy-nine thousand, eight hundred eighty-one".