56291789 has 2 divisors, whose sum is σ = 56291790. Its totient is φ = 56291788.

The previous prime is 56291771. The next prime is 56291831. The reversal of 56291789 is 98719265.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32604100 + 23687689 = 5710^2 + 4867^2 .

It is a cyclic number.

It is not a de Polignac number, because 56291789 - 2⁸ = 56291533 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56291089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28145894 + 28145895.

It is an arithmetic number, because the mean of its divisors is an integer number (28145895).

Almost surely, 2^56291789 is an apocalyptic number.

It is an amenable number.

56291789 is a deficient number, since it is larger than the sum of its proper divisors (1).

56291789 is an equidigital number, since it uses as much as digits as its factorization.

56291789 is an evil number, because the sum of its binary digits is even.

The product of its digits is 272160, while the sum is 47.

The square root of 56291789 is about 7502.7854160971. The cubic root of 56291789 is about 383.2495765759.

The spelling of 56291789 in words is "fifty-six million, two hundred ninety-one thousand, seven hundred eighty-nine".