56840089 has 2 divisors, whose sum is σ = 56840090. Its totient is φ = 56840088.

The previous prime is 56840083. The next prime is 56840093. The reversal of 56840089 is 98004865.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 45225625 + 11614464 = 6725^2 + 3408^2 .

It is a cyclic number.

It is not a de Polignac number, because 56840089 - 2⁵ = 56840057 is a prime.

It is not a weakly prime, because it can be changed into another prime (56840083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28420044 + 28420045.

It is an arithmetic number, because the mean of its divisors is an integer number (28420045).

Almost surely, 2^56840089 is an apocalyptic number.

It is an amenable number.

56840089 is a deficient number, since it is larger than the sum of its proper divisors (1).

56840089 is an equidigital number, since it uses as much as digits as its factorization.

56840089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69120, while the sum is 40.

The square root of 56840089 is about 7539.2366324450. The cubic root of 56840089 is about 384.4898826761.

The spelling of 56840089 in words is "fifty-six million, eight hundred forty thousand, eighty-nine".