50591977 has 2 divisors, whose sum is σ = 50591978. Its totient is φ = 50591976.

The previous prime is 50591971. The next prime is 50592029. The reversal of 50591977 is 77919505.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43811161 + 6780816 = 6619^2 + 2604^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50591977 is a prime.

It is not a weakly prime, because it can be changed into another prime (50591971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25295988 + 25295989.

It is an arithmetic number, because the mean of its divisors is an integer number (25295989).

Almost surely, 2^50591977 is an apocalyptic number.

It is an amenable number.

50591977 is a deficient number, since it is larger than the sum of its proper divisors (1).

50591977 is an equidigital number, since it uses as much as digits as its factorization.

50591977 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 99225, while the sum is 43.

The square root of 50591977 is about 7112.8037369240. The cubic root of 50591977 is about 369.8513573856.

The spelling of 50591977 in words is "fifty million, five hundred ninety-one thousand, nine hundred seventy-seven".