255366261 has 12 divisors (see below), whose sum is σ = 369665088. Its totient is φ = 169873704.

The previous prime is 255366259. The next prime is 255366271. The reversal of 255366261 is 162663552.

It is a happy number.

255366261 is a `hidden beast` number, since 2 + 5 + 536 + 62 + 61 = 666.

It is not a de Polignac number, because 255366261 - 2¹ = 255366259 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255366211) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26475 + ... + 34808.

It is an arithmetic number, because the mean of its divisors is an integer number (30805424).

Almost surely, 2^255366261 is an apocalyptic number.

It is an amenable number.

255366261 is a deficient number, since it is larger than the sum of its proper divisors (114298827).

255366261 is a wasteful number, since it uses less digits than its factorization.

255366261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61752 (or 61749 counting only the distinct ones).

The product of its digits is 64800, while the sum is 36.

The square root of 255366261 is about 15980.1833844296. The cubic root of 255366261 is about 634.4360305637.

The spelling of 255366261 in words is "two hundred fifty-five million, three hundred sixty-six thousand, two hundred sixty-one".