56290789 has 2 divisors, whose sum is σ = 56290790. Its totient is φ = 56290788.

The previous prime is 56290781. The next prime is 56290799. The reversal of 56290789 is 98709265.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47541025 + 8749764 = 6895^2 + 2958^2 .

It is a cyclic number.

It is not a de Polignac number, because 56290789 - 2³ = 56290781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56290781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28145394 + 28145395.

It is an arithmetic number, because the mean of its divisors is an integer number (28145395).

Almost surely, 2^56290789 is an apocalyptic number.

It is an amenable number.

56290789 is a deficient number, since it is larger than the sum of its proper divisors (1).

56290789 is an equidigital number, since it uses as much as digits as its factorization.

56290789 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 272160, while the sum is 46.

The square root of 56290789 is about 7502.7187738846. The cubic root of 56290789 is about 383.2473071398.

The spelling of 56290789 in words is "fifty-six million, two hundred ninety thousand, seven hundred eighty-nine".