255458617 has 2 divisors, whose sum is σ = 255458618. Its totient is φ = 255458616.

The previous prime is 255458611. The next prime is 255458633. The reversal of 255458617 is 716854552.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 171845881 + 83612736 = 13109^2 + 9144^2 .

It is a cyclic number.

It is not a de Polignac number, because 255458617 - 2²³ = 247070009 is a prime.

It is a super-3 number, since 3×255458617³ (a number of 26 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (255458611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127729308 + 127729309.

It is an arithmetic number, because the mean of its divisors is an integer number (127729309).

Almost surely, 2^255458617 is an apocalyptic number.

It is an amenable number.

255458617 is a deficient number, since it is larger than the sum of its proper divisors (1).

255458617 is an equidigital number, since it uses as much as digits as its factorization.

255458617 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 336000, while the sum is 43.

The square root of 255458617 is about 15983.0728272132. The cubic root of 255458617 is about 634.5125049206.

The spelling of 255458617 in words is "two hundred fifty-five million, four hundred fifty-eight thousand, six hundred seventeen".