255031161 has 64 divisors (see below), whose sum is σ = 454035456. Its totient is φ = 123264000.

The previous prime is 255031159. The next prime is 255031181. The reversal of 255031161 is 161130552.

It is not a de Polignac number, because 255031161 - 2¹ = 255031159 is a prime.

It is not an unprimeable number, because it can be changed into a prime (255031181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 396306 + ... + 396948.

It is an arithmetic number, because the mean of its divisors is an integer number (7094304).

Almost surely, 2^255031161 is an apocalyptic number.

255031161 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

255031161 is a deficient number, since it is larger than the sum of its proper divisors (199004295).

255031161 is a wasteful number, since it uses less digits than its factorization.

255031161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 782.

The product of its (nonzero) digits is 900, while the sum is 24.

The square root of 255031161 is about 15969.6950816226. The cubic root of 255031161 is about 634.1583998198.

The spelling of 255031161 in words is "two hundred fifty-five million, thirty-one thousand, one hundred sixty-one".