255555433 has 6 divisors (see below), whose sum is σ = 297278826. Its totient is φ = 219047472.

The previous prime is 255555397. The next prime is 255555451. The reversal of 255555433 is 334555552.

It can be written as a sum of positive squares in only one way, i.e., 192876544 + 62678889 = 13888^2 + 7917^2 .

It is not a de Polignac number, because 255555433 - 2²⁵ = 222001001 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 255555392 and 255555401.

It is not an unprimeable number, because it can be changed into a prime (255555473) 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 in 5 ways as a sum of consecutive naturals, for example, 2607660 + ... + 2607757.

It is an arithmetic number, because the mean of its divisors is an integer number (49546471).

Almost surely, 2^255555433 is an apocalyptic number.

It is an amenable number.

255555433 is a deficient number, since it is larger than the sum of its proper divisors (41723393).

255555433 is an equidigital number, since it uses as much as digits as its factorization.

255555433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5215431 (or 5215424 counting only the distinct ones).

The product of its digits is 225000, while the sum is 37.

The square root of 255555433 is about 15986.1012445186. The cubic root of 255555433 is about 634.5926525449.

The spelling of 255555433 in words is "two hundred fifty-five million, five hundred fifty-five thousand, four hundred thirty-three".