255577407571 has 2 divisors, whose sum is σ = 255577407572. Its totient is φ = 255577407570.

The previous prime is 255577407541. The next prime is 255577407581. The reversal of 255577407571 is 175704775552.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 255577407571 - 2⁵ = 255577407539 is a prime.

It is a super-2 number, since 2×255577407571² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (255577407511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127788703785 + 127788703786.

It is an arithmetic number, because the mean of its divisors is an integer number (127788703786).

Almost surely, 2^255577407571 is an apocalyptic number.

255577407571 is a deficient number, since it is larger than the sum of its proper divisors (1).

255577407571 is an equidigital number, since it uses as much as digits as its factorization.

255577407571 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12005000, while the sum is 55.

The spelling of 255577407571 in words is "two hundred fifty-five billion, five hundred seventy-seven million, four hundred seven thousand, five hundred seventy-one".