255023321 has 16 divisors (see below), whose sum is σ = 299230848. Its totient is φ = 212784000.

The previous prime is 255023317. The next prime is 255023347. The reversal of 255023321 is 123320552.

It is a cyclic number.

It is not a de Polignac number, because 255023321 - 2² = 255023317 is a prime.

It is not an unprimeable number, because it can be changed into a prime (255023381) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 195371 + ... + 196671.

It is an arithmetic number, because the mean of its divisors is an integer number (18701928).

Almost surely, 2^255023321 is an apocalyptic number.

It is an amenable number.

255023321 is a deficient number, since it is larger than the sum of its proper divisors (44207527).

255023321 is a wasteful number, since it uses less digits than its factorization.

255023321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2032.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 255023321 is about 15969.4496148114. The cubic root of 255023321 is about 634.1519014599.

Adding to 255023321 its reverse (123320552), we get a palindrome (378343873).

The spelling of 255023321 in words is "two hundred fifty-five million, twenty-three thousand, three hundred twenty-one".