56290889 has 2 divisors, whose sum is σ = 56290890. Its totient is φ = 56290888.

The previous prime is 56290877. The next prime is 56290891. The reversal of 56290889 is 98809265.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 47499664 + 8791225 = 6892^2 + 2965^2 .

It is a cyclic number.

It is not a de Polignac number, because 56290889 - 2⁴ = 56290873 is a prime.

Together with 56290891, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (56290489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28145444 + 28145445.

It is an arithmetic number, because the mean of its divisors is an integer number (28145445).

Almost surely, 2^56290889 is an apocalyptic number.

It is an amenable number.

56290889 is a deficient number, since it is larger than the sum of its proper divisors (1).

56290889 is an equidigital number, since it uses as much as digits as its factorization.

56290889 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 311040, while the sum is 47.

The square root of 56290889 is about 7502.7254381325. The cubic root of 56290889 is about 383.2475340846.

The spelling of 56290889 in words is "fifty-six million, two hundred ninety thousand, eight hundred eighty-nine".