56575289 has 2 divisors, whose sum is σ = 56575290. Its totient is φ = 56575288.

The previous prime is 56575283. The next prime is 56575313. The reversal of 56575289 is 98257565.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50410000 + 6165289 = 7100^2 + 2483^2 .

It is a cyclic number.

It is not a de Polignac number, because 56575289 - 2¹⁶ = 56509753 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (56575283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28287644 + 28287645.

It is an arithmetic number, because the mean of its divisors is an integer number (28287645).

Almost surely, 2^56575289 is an apocalyptic number.

It is an amenable number.

56575289 is a deficient number, since it is larger than the sum of its proper divisors (1).

56575289 is an equidigital number, since it uses as much as digits as its factorization.

56575289 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 756000, while the sum is 47.

The square root of 56575289 is about 7521.6546716796. The cubic root of 56575289 is about 383.8918808202.

The spelling of 56575289 in words is "fifty-six million, five hundred seventy-five thousand, two hundred eighty-nine".