255531345 has 16 divisors (see below), whose sum is σ = 411794880. Its totient is φ = 135301824.

The previous prime is 255531337. The next prime is 255531359. The reversal of 255531345 is 543135552.

It is a happy number.

It is not a de Polignac number, because 255531345 - 2³ = 255531337 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59194 + ... + 63363.

It is an arithmetic number, because the mean of its divisors is an integer number (25737180).

Almost surely, 2^255531345 is an apocalyptic number.

It is an amenable number.

255531345 is a deficient number, since it is larger than the sum of its proper divisors (156263535).

255531345 is a wasteful number, since it uses less digits than its factorization.

255531345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122704.

The product of its digits is 45000, while the sum is 33.

The square root of 255531345 is about 15985.3478223028. The cubic root of 255531345 is about 634.5727135595.

Adding to 255531345 its reverse (543135552), we get a palindrome (798666897).

The spelling of 255531345 in words is "two hundred fifty-five million, five hundred thirty-one thousand, three hundred forty-five".