255030173 has 2 divisors, whose sum is σ = 255030174. Its totient is φ = 255030172.

The previous prime is 255030137. The next prime is 255030197. The reversal of 255030173 is 371030552.

Together with previous prime (255030137) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 249545209 + 5484964 = 15797^2 + 2342^2 .

It is a cyclic number.

It is not a de Polignac number, because 255030173 - 2¹⁰ = 255029149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (255020173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127515086 + 127515087.

It is an arithmetic number, because the mean of its divisors is an integer number (127515087).

Almost surely, 2^255030173 is an apocalyptic number.

It is an amenable number.

255030173 is a deficient number, since it is larger than the sum of its proper divisors (1).

255030173 is an equidigital number, since it uses as much as digits as its factorization.

255030173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3150, while the sum is 26.

The square root of 255030173 is about 15969.6641480026. The cubic root of 255030173 is about 634.1575809012.

It can be divided in two parts, 2550 and 30173, that added together give a palindrome (32723).

The spelling of 255030173 in words is "two hundred fifty-five million, thirty thousand, one hundred seventy-three".