56253409 has 2 divisors, whose sum is σ = 56253410. Its totient is φ = 56253408.

The previous prime is 56253403. The next prime is 56253413. The reversal of 56253409 is 90435265.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 56205009 + 48400 = 7497^2 + 220^2 .

It is a cyclic number.

It is not a de Polignac number, because 56253409 - 2²¹ = 54156257 is a prime.

It is not a weakly prime, because it can be changed into another prime (56253403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28126704 + 28126705.

It is an arithmetic number, because the mean of its divisors is an integer number (28126705).

Almost surely, 2^56253409 is an apocalyptic number.

It is an amenable number.

56253409 is a deficient number, since it is larger than the sum of its proper divisors (1).

56253409 is an equidigital number, since it uses as much as digits as its factorization.

56253409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32400, while the sum is 34.

The square root of 56253409 is about 7500.2272632234. The cubic root of 56253409 is about 383.1624563333.

The spelling of 56253409 in words is "fifty-six million, two hundred fifty-three thousand, four hundred nine".