56369281 has 2 divisors, whose sum is σ = 56369282. Its totient is φ = 56369280.

The previous prime is 56369273. The next prime is 56369351. The reversal of 56369281 is 18296365.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54626881 + 1742400 = 7391^2 + 1320^2 .

It is a cyclic number.

It is not a de Polignac number, because 56369281 - 2³ = 56369273 is a prime.

It is a super-2 number, since 2×56369281² = 6354991680913922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (56369231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28184640 + 28184641.

It is an arithmetic number, because the mean of its divisors is an integer number (28184641).

Almost surely, 2^56369281 is an apocalyptic number.

It is an amenable number.

56369281 is a deficient number, since it is larger than the sum of its proper divisors (1).

56369281 is an equidigital number, since it uses as much as digits as its factorization.

56369281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 77760, while the sum is 40.

The square root of 56369281 is about 7507.9478554396. The cubic root of 56369281 is about 383.4253580366.

The spelling of 56369281 in words is "fifty-six million, three hundred sixty-nine thousand, two hundred eighty-one".