255233161 has 4 divisors (see below), whose sum is σ = 257760324. Its totient is φ = 252706000.

The previous prime is 255233117. The next prime is 255233177. The reversal of 255233161 is 161332552.

255233161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 122522761 + 132710400 = 11069^2 + 11520^2 .

It is a cyclic number.

It is not a de Polignac number, because 255233161 - 2¹⁹ = 254708873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (255233101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1263430 + ... + 1263631.

It is an arithmetic number, because the mean of its divisors is an integer number (64440081).

Almost surely, 2^255233161 is an apocalyptic number.

It is an amenable number.

255233161 is a deficient number, since it is larger than the sum of its proper divisors (2527163).

255233161 is a wasteful number, since it uses less digits than its factorization.

255233161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2527162.

The product of its digits is 5400, while the sum is 28.

The square root of 255233161 is about 15976.0183087026. The cubic root of 255233161 is about 634.3257861504.

The spelling of 255233161 in words is "two hundred fifty-five million, two hundred thirty-three thousand, one hundred sixty-one".