55560560591 has 2 divisors, whose sum is σ = 55560560592. Its totient is φ = 55560560590.

The previous prime is 55560560533. The next prime is 55560560593. The reversal of 55560560591 is 19506506555.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55560560591 is a prime.

It is a super-3 number, since 3×55560560591³ (a number of 33 digits) contains 333 as substring.

Together with 55560560593, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55560560593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27780280295 + 27780280296.

It is an arithmetic number, because the mean of its divisors is an integer number (27780280296).

Almost surely, 2^55560560591 is an apocalyptic number.

55560560591 is a deficient number, since it is larger than the sum of its proper divisors (1).

55560560591 is an equidigital number, since it uses as much as digits as its factorization.

55560560591 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1012500, while the sum is 47.

The spelling of 55560560591 in words is "fifty-five billion, five hundred sixty million, five hundred sixty thousand, five hundred ninety-one".