56563553 has 2 divisors, whose sum is σ = 56563554. Its totient is φ = 56563552.

The previous prime is 56563541. The next prime is 56563567. The reversal of 56563553 is 35536565.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 52591504 + 3972049 = 7252^2 + 1993^2 .

It is a cyclic number.

It is not a de Polignac number, because 56563553 - 2¹⁸ = 56301409 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (56563153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28281776 + 28281777.

It is an arithmetic number, because the mean of its divisors is an integer number (28281777).

Almost surely, 2^56563553 is an apocalyptic number.

It is an amenable number.

56563553 is a deficient number, since it is larger than the sum of its proper divisors (1).

56563553 is an equidigital number, since it uses as much as digits as its factorization.

56563553 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 202500, while the sum is 38.

The square root of 56563553 is about 7520.8744837286. The cubic root of 56563553 is about 383.8653340907.

The spelling of 56563553 in words is "fifty-six million, five hundred sixty-three thousand, five hundred fifty-three".