55595563 has 2 divisors, whose sum is σ = 55595564. Its totient is φ = 55595562.

The previous prime is 55595543. The next prime is 55595587. The reversal of 55595563 is 36559555.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55595563 is a prime.

It is not a weakly prime, because it can be changed into another prime (55595543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27797781 + 27797782.

It is an arithmetic number, because the mean of its divisors is an integer number (27797782).

Almost surely, 2^55595563 is an apocalyptic number.

55595563 is a deficient number, since it is larger than the sum of its proper divisors (1).

55595563 is an equidigital number, since it uses as much as digits as its factorization.

55595563 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 506250, while the sum is 43.

The square root of 55595563 is about 7456.2432229642. The cubic root of 55595563 is about 381.6629863895.

The spelling of 55595563 in words is "fifty-five million, five hundred ninety-five thousand, five hundred sixty-three".