50981089 has 2 divisors, whose sum is σ = 50981090. Its totient is φ = 50981088.

The previous prime is 50981059. The next prime is 50981093. The reversal of 50981089 is 98018905.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26061025 + 24920064 = 5105^2 + 4992^2 .

It is a cyclic number.

It is not a de Polignac number, because 50981089 - 2⁵ = 50981057 is a prime.

It is not a weakly prime, because it can be changed into another prime (50981059) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25490544 + 25490545.

It is an arithmetic number, because the mean of its divisors is an integer number (25490545).

Almost surely, 2^50981089 is an apocalyptic number.

It is an amenable number.

50981089 is a deficient number, since it is larger than the sum of its proper divisors (1).

50981089 is an equidigital number, since it uses as much as digits as its factorization.

50981089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25920, while the sum is 40.

The square root of 50981089 is about 7140.1042709473. The cubic root of 50981089 is about 370.7971345833.

The spelling of 50981089 in words is "fifty million, nine hundred eighty-one thousand, eighty-nine".