56409253 has 2 divisors, whose sum is σ = 56409254. Its totient is φ = 56409252.

The previous prime is 56409203. The next prime is 56409257. The reversal of 56409253 is 35290465.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 56295009 + 114244 = 7503^2 + 338^2 .

It is a cyclic number.

It is not a de Polignac number, because 56409253 - 2²¹ = 54312101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56409257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28204626 + 28204627.

It is an arithmetic number, because the mean of its divisors is an integer number (28204627).

Almost surely, 2^56409253 is an apocalyptic number.

It is an amenable number.

56409253 is a deficient number, since it is larger than the sum of its proper divisors (1).

56409253 is an equidigital number, since it uses as much as digits as its factorization.

56409253 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 56409253 is about 7510.6093627615. The cubic root of 56409253 is about 383.5159668274.

The spelling of 56409253 in words is "fifty-six million, four hundred nine thousand, two hundred fifty-three".