255023165 has 4 divisors (see below), whose sum is σ = 306027804. Its totient is φ = 204018528.

The previous prime is 255023141. The next prime is 255023177. The reversal of 255023165 is 561320552.

It is a happy number.

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 190798969 + 64224196 = 13813^2 + 8014^2 .

It is a cyclic number.

It is not a de Polignac number, because 255023165 - 2¹⁴ = 255006781 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25502312 + ... + 25502321.

It is an arithmetic number, because the mean of its divisors is an integer number (76506951).

Almost surely, 2^255023165 is an apocalyptic number.

It is an amenable number.

255023165 is a deficient number, since it is larger than the sum of its proper divisors (51004639).

255023165 is an equidigital number, since it uses as much as digits as its factorization.

255023165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51004638.

The product of its (nonzero) digits is 9000, while the sum is 29.

The square root of 255023165 is about 15969.4447304845. Note that the first 3 decimals coincide. The cubic root of 255023165 is about 634.1517721544.

The spelling of 255023165 in words is "two hundred fifty-five million, twenty-three thousand, one hundred sixty-five".