255517253 has 2 divisors, whose sum is σ = 255517254. Its totient is φ = 255517252.

The previous prime is 255517211. The next prime is 255517261. The reversal of 255517253 is 352715552.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 192044164 + 63473089 = 13858^2 + 7967^2 .

It is a cyclic number.

It is not a de Polignac number, because 255517253 - 2¹⁸ = 255255109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (255517553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127758626 + 127758627.

It is an arithmetic number, because the mean of its divisors is an integer number (127758627).

Almost surely, 2^255517253 is an apocalyptic number.

It is an amenable number.

255517253 is a deficient number, since it is larger than the sum of its proper divisors (1).

255517253 is an equidigital number, since it uses as much as digits as its factorization.

255517253 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 52500, while the sum is 35.

The square root of 255517253 is about 15984.9070375777. The cubic root of 255517253 is about 634.5610482417.

The spelling of 255517253 in words is "two hundred fifty-five million, five hundred seventeen thousand, two hundred fifty-three".