255161385 has 24 divisors (see below), whose sum is σ = 446581824. Its totient is φ = 134762400.

The previous prime is 255161383. The next prime is 255161399. The reversal of 255161385 is 583161552.

It is a happy number.

255161385 is a `hidden beast` number, since 2 + 5 + 516 + 138 + 5 = 666.

It is not a de Polignac number, because 255161385 - 2¹ = 255161383 is a prime.

It is not an unprimeable number, because it can be changed into a prime (255161383) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22891 + ... + 32160.

It is an arithmetic number, because the mean of its divisors is an integer number (18607576).

Almost surely, 2^255161385 is an apocalyptic number.

It is an amenable number.

255161385 is a deficient number, since it is larger than the sum of its proper divisors (191420439).

255161385 is a wasteful number, since it uses less digits than its factorization.

255161385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55165 (or 55162 counting only the distinct ones).

The product of its digits is 36000, while the sum is 36.

The square root of 255161385 is about 15973.7717837710. The cubic root of 255161385 is about 634.2663194311.

It can be divided in two parts, 2551 and 61385, that added together give a palindrome (63936).

The spelling of 255161385 in words is "two hundred fifty-five million, one hundred sixty-one thousand, three hundred eighty-five".