6455558555531 has 2 divisors, whose sum is σ = 6455558555532. Its totient is φ = 6455558555530.

The previous prime is 6455558555513. The next prime is 6455558555549. The reversal of 6455558555531 is 1355558555546.

It is a happy number.

Together with previous prime (6455558555513) it forms an Ormiston pair, because they use the same digits, order apart.

It is a balanced prime because it is at equal distance from previous prime (6455558555513) and next prime (6455558555549).

It is a cyclic number.

It is not a de Polignac number, because 6455558555531 - 2²² = 6455554361227 is a prime.

It is a super-2 number, since 2×6455558555531² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (6455558555561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3227779277765 + 3227779277766.

It is an arithmetic number, because the mean of its divisors is an integer number (3227779277766).

Almost surely, 2^{6455558555531} is an apocalyptic number.

6455558555531 is a deficient number, since it is larger than the sum of its proper divisors (1).

6455558555531 is an equidigital number, since it uses as much as digits as its factorization.

6455558555531 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 225000000, while the sum is 62.

The spelling of 6455558555531 in words is "six trillion, four hundred fifty-five billion, five hundred fifty-eight million, five hundred fifty-five thousand, five hundred thirty-one".