255467521 has 4 divisors (see below), whose sum is σ = 268913200. Its totient is φ = 242021844.

The previous prime is 255467519. The next prime is 255467539. The reversal of 255467521 is 125764552.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 255467521 - 2¹ = 255467519 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (255467561) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6722811 + ... + 6722848.

It is an arithmetic number, because the mean of its divisors is an integer number (67228300).

Almost surely, 2^255467521 is an apocalyptic number.

It is an amenable number.

255467521 is a deficient number, since it is larger than the sum of its proper divisors (13445679).

255467521 is a wasteful number, since it uses less digits than its factorization.

255467521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13445678.

The product of its digits is 84000, while the sum is 37.

The square root of 255467521 is about 15983.3513694719. The cubic root of 255467521 is about 634.5198768044.

The spelling of 255467521 in words is "two hundred fifty-five million, four hundred sixty-seven thousand, five hundred twenty-one".