255956553 has 12 divisors (see below), whose sum is σ = 381641728. Its totient is φ = 165133080.

The previous prime is 255956551. The next prime is 255956567. The reversal of 255956553 is 355659552.

255956553 is a `hidden beast` number, since 2 + 5 + 5 + 95 + 6 + 553 = 666.

It is not a de Polignac number, because 255956553 - 2¹ = 255956551 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 255956499 and 255956508.

It is not an unprimeable number, because it can be changed into a prime (255956551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 458425 + ... + 458982.

Almost surely, 2^255956553 is an apocalyptic number.

It is an amenable number.

255956553 is a deficient number, since it is larger than the sum of its proper divisors (125685175).

255956553 is a wasteful number, since it uses less digits than its factorization.

255956553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 917444 (or 917441 counting only the distinct ones).

The product of its digits is 1012500, while the sum is 45.

The square root of 255956553 is about 15998.6422236389. The cubic root of 255956553 is about 634.9244980188.

The spelling of 255956553 in words is "two hundred fifty-five million, nine hundred fifty-six thousand, five hundred fifty-three".