56690089 has 2 divisors, whose sum is σ = 56690090. Its totient is φ = 56690088.

The previous prime is 56690071. The next prime is 56690093. The reversal of 56690089 is 98009665.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52417600 + 4272489 = 7240^2 + 2067^2 .

It is a cyclic number.

It is not a de Polignac number, because 56690089 - 2⁷ = 56689961 is a prime.

It is not a weakly prime, because it can be changed into another prime (56690059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28345044 + 28345045.

It is an arithmetic number, because the mean of its divisors is an integer number (28345045).

Almost surely, 2^56690089 is an apocalyptic number.

It is an amenable number.

56690089 is a deficient number, since it is larger than the sum of its proper divisors (1).

56690089 is an equidigital number, since it uses as much as digits as its factorization.

56690089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 116640, while the sum is 43.

The square root of 56690089 is about 7529.2821038928. The cubic root of 56690089 is about 384.1513640295.

The spelling of 56690089 in words is "fifty-six million, six hundred ninety thousand, eighty-nine".