255777164 has 18 divisors (see below), whose sum is σ = 472411044. Its totient is φ = 121156920.

The previous prime is 255777163. The next prime is 255777167. The reversal of 255777164 is 461777552.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (255777161) 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 in 5 ways as a sum of consecutive naturals, for example, 87122 + ... + 90009.

It is an arithmetic number, because the mean of its divisors is an integer number (26245058).

Almost surely, 2^255777164 is an apocalyptic number.

It is an amenable number.

255777164 is a deficient number, since it is larger than the sum of its proper divisors (216633880).

255777164 is a wasteful number, since it uses less digits than its factorization.

255777164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177173 (or 177152 counting only the distinct ones).

The product of its digits is 411600, while the sum is 44.

The square root of 255777164 is about 15993.0348589628. The cubic root of 255777164 is about 634.7761328781.

The spelling of 255777164 in words is "two hundred fifty-five million, seven hundred seventy-seven thousand, one hundred sixty-four".