255297069 has 16 divisors (see below), whose sum is σ = 378710400. Its totient is φ = 169976448.

The previous prime is 255297023. The next prime is 255297089. The reversal of 255297069 is 960792552.

255297069 is a `hidden beast` number, since 2 + 552 + 97 + 0 + 6 + 9 = 666.

It is not a de Polignac number, because 255297069 - 2⁹ = 255296557 is a prime.

It is a super-2 number, since 2×255297069² = 130353186879981522, which contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255297019) 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, 16477 + ... + 27965.

It is an arithmetic number, because the mean of its divisors is an integer number (23669400).

Almost surely, 2^255297069 is an apocalyptic number.

It is an amenable number.

255297069 is a deficient number, since it is larger than the sum of its proper divisors (123413331).

255297069 is a wasteful number, since it uses less digits than its factorization.

255297069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12321 (or 12315 counting only the distinct ones).

The product of its (nonzero) digits is 340200, while the sum is 45.

The square root of 255297069 is about 15978.0183064108. The cubic root of 255297069 is about 634.3787248166.

The spelling of 255297069 in words is "two hundred fifty-five million, two hundred ninety-seven thousand, sixty-nine".