56540663 has 2 divisors, whose sum is σ = 56540664. Its totient is φ = 56540662.

The previous prime is 56540651. The next prime is 56540669. The reversal of 56540663 is 36604565.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56540663 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56540669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28270331 + 28270332.

It is an arithmetic number, because the mean of its divisors is an integer number (28270332).

Almost surely, 2^56540663 is an apocalyptic number.

56540663 is a deficient number, since it is larger than the sum of its proper divisors (1).

56540663 is an equidigital number, since it uses as much as digits as its factorization.

56540663 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64800, while the sum is 35.

The square root of 56540663 is about 7519.3525652146. The cubic root of 56540663 is about 383.8135465434.

The spelling of 56540663 in words is "fifty-six million, five hundred forty thousand, six hundred sixty-three".