56276509 has 2 divisors, whose sum is σ = 56276510. Its totient is φ = 56276508.

The previous prime is 56276497. The next prime is 56276533. The reversal of 56276509 is 90567265.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43850884 + 12425625 = 6622^2 + 3525^2 .

It is a cyclic number.

It is not a de Polignac number, because 56276509 - 2¹¹ = 56274461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56276609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28138254 + 28138255.

It is an arithmetic number, because the mean of its divisors is an integer number (28138255).

Almost surely, 2^56276509 is an apocalyptic number.

It is an amenable number.

56276509 is a deficient number, since it is larger than the sum of its proper divisors (1).

56276509 is an equidigital number, since it uses as much as digits as its factorization.

56276509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 113400, while the sum is 40.

The square root of 56276509 is about 7501.7670585003. The cubic root of 56276509 is about 383.2148966603.

The spelling of 56276509 in words is "fifty-six million, two hundred seventy-six thousand, five hundred nine".