56091589 has 2 divisors, whose sum is σ = 56091590. Its totient is φ = 56091588.

The previous prime is 56091587. The next prime is 56091599. The reversal of 56091589 is 98519065.

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., 30991489 + 25100100 = 5567^2 + 5010^2 .

It is a cyclic number.

It is not a de Polignac number, because 56091589 - 2¹ = 56091587 is a prime.

Together with 56091587, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56091587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28045794 + 28045795.

It is an arithmetic number, because the mean of its divisors is an integer number (28045795).

Almost surely, 2^56091589 is an apocalyptic number.

It is an amenable number.

56091589 is a deficient number, since it is larger than the sum of its proper divisors (1).

56091589 is an equidigital number, since it uses as much as digits as its factorization.

56091589 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 97200, while the sum is 43.

The square root of 56091589 is about 7489.4318209060. The cubic root of 56091589 is about 382.7946984886.

The spelling of 56091589 in words is "fifty-six million, ninety-one thousand, five hundred eighty-nine".