56952809 has 2 divisors, whose sum is σ = 56952810. Its totient is φ = 56952808.

The previous prime is 56952803. The next prime is 56952817. The reversal of 56952809 is 90825965.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 56625625 + 327184 = 7525^2 + 572^2 .

It is a cyclic number.

It is not a de Polignac number, because 56952809 - 2²⁴ = 40175593 is a prime.

It is a super-3 number, since 3×56952809³ (a number of 24 digits) contains 333 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 56952809.

It is not a weakly prime, because it can be changed into another prime (56952803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28476404 + 28476405.

It is an arithmetic number, because the mean of its divisors is an integer number (28476405).

Almost surely, 2^56952809 is an apocalyptic number.

It is an amenable number.

56952809 is a deficient number, since it is larger than the sum of its proper divisors (1).

56952809 is an equidigital number, since it uses as much as digits as its factorization.

56952809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 194400, while the sum is 44.

The square root of 56952809 is about 7546.7084878111. The cubic root of 56952809 is about 384.7438764258.

The spelling of 56952809 in words is "fifty-six million, nine hundred fifty-two thousand, eight hundred nine".