255173 has 2 divisors, whose sum is σ = 255174. Its totient is φ = 255172.

The previous prime is 255149. The next prime is 255179. The reversal of 255173 is 371552.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 214369 + 40804 = 463^2 + 202^2 .

It is a cyclic number.

It is not a de Polignac number, because 255173 - 2¹⁴ = 238789 is a prime.

It is a super-2 number, since 2×255173² = 130226519858, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (255179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127586 + 127587.

It is an arithmetic number, because the mean of its divisors is an integer number (127587).

2²⁵⁵¹⁷³ is an apocalyptic number.

It is an amenable number.

255173 is a deficient number, since it is larger than the sum of its proper divisors (1).

255173 is an equidigital number, since it uses as much as digits as its factorization.

255173 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1050, while the sum is 23.

The square root of 255173 is about 505.1465133998. The cubic root of 255173 is about 63.4275943264.

The spelling of 255173 in words is "two hundred fifty-five thousand, one hundred seventy-three".