255446563 has 2 divisors, whose sum is σ = 255446564. Its totient is φ = 255446562.

The previous prime is 255446519. The next prime is 255446593. The reversal of 255446563 is 365644552.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 255446563 - 2²⁵ = 221892131 is a prime.

It is not a weakly prime, because it can be changed into another prime (255446593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127723281 + 127723282.

It is an arithmetic number, because the mean of its divisors is an integer number (127723282).

Almost surely, 2^255446563 is an apocalyptic number.

255446563 is a deficient number, since it is larger than the sum of its proper divisors (1).

255446563 is an equidigital number, since it uses as much as digits as its factorization.

255446563 is an evil number, because the sum of its binary digits is even.

The product of its digits is 432000, while the sum is 40.

The square root of 255446563 is about 15982.6957363268. The cubic root of 255446563 is about 634.5025247862.

The spelling of 255446563 in words is "two hundred fifty-five million, four hundred forty-six thousand, five hundred sixty-three".