555580555531 has 2 divisors, whose sum is σ = 555580555532. Its totient is φ = 555580555530.

The previous prime is 555580555489. The next prime is 555580555571. The reversal of 555580555531 is 135555085555.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 555580555531 - 2¹¹ = 555580553483 is a prime.

It is a super-2 number, since 2×555580555531² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (555580555571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 277790277765 + 277790277766.

It is an arithmetic number, because the mean of its divisors is an integer number (277790277766).

Almost surely, 2^555580555531 is an apocalyptic number.

555580555531 is a deficient number, since it is larger than the sum of its proper divisors (1).

555580555531 is an equidigital number, since it uses as much as digits as its factorization.

555580555531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9375000, while the sum is 52.

It can be divided in two parts, 555580 and 555531, that added together give a palindrome (1111111).

The spelling of 555580555531 in words is "five hundred fifty-five billion, five hundred eighty million, five hundred fifty-five thousand, five hundred thirty-one".