50621881 has 2 divisors, whose sum is σ = 50621882. Its totient is φ = 50621880.

The previous prime is 50621863. The next prime is 50621897. The reversal of 50621881 is 18812605.

50621881 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36060025 + 14561856 = 6005^2 + 3816^2 .

It is a cyclic number.

It is not a de Polignac number, because 50621881 - 2⁹ = 50621369 is a prime.

It is a super-2 number, since 2×50621881² = 5125149671956322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (50621821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25310940 + 25310941.

It is an arithmetic number, because the mean of its divisors is an integer number (25310941).

Almost surely, 2^50621881 is an apocalyptic number.

It is an amenable number.

50621881 is a deficient number, since it is larger than the sum of its proper divisors (1).

50621881 is an equidigital number, since it uses as much as digits as its factorization.

50621881 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3840, while the sum is 31.

The square root of 50621881 is about 7114.9055510246. The cubic root of 50621881 is about 369.9242138425.

The spelling of 50621881 in words is "fifty million, six hundred twenty-one thousand, eight hundred eighty-one".