56139089 has 2 divisors, whose sum is σ = 56139090. Its totient is φ = 56139088.

The previous prime is 56139079. The next prime is 56139131. The reversal of 56139089 is 98093165.

56139089 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 56130064 + 9025 = 7492^2 + 95^2 .

It is a cyclic number.

It is not a de Polignac number, because 56139089 - 2⁴ = 56139073 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (56139079) 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, 28069544 + 28069545.

It is an arithmetic number, because the mean of its divisors is an integer number (28069545).

Almost surely, 2^56139089 is an apocalyptic number.

It is an amenable number.

56139089 is a deficient number, since it is larger than the sum of its proper divisors (1).

56139089 is an equidigital number, since it uses as much as digits as its factorization.

56139089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 58320, while the sum is 41.

The square root of 56139089 is about 7492.6022849208. The cubic root of 56139089 is about 382.9027219217.

The spelling of 56139089 in words is "fifty-six million, one hundred thirty-nine thousand, eighty-nine".