261174256 has 40 divisors (see below), whose sum is σ = 596977664. Its totient is φ = 108319680.

The previous prime is 261174239. The next prime is 261174257. The reversal of 261174256 is 652471162.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261174257) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34140 + ... + 41083.

Almost surely, 2^261174256 is an apocalyptic number.

It is an amenable number.

261174256 is an abundant number, since it is smaller than the sum of its proper divisors (335803408).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

261174256 is a wasteful number, since it uses less digits than its factorization.

261174256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75269 (or 75263 counting only the distinct ones).

The product of its digits is 20160, while the sum is 34.

The square root of 261174256 is about 16160.8866093417. The cubic root of 261174256 is about 639.2098451755.

It can be divided in two parts, 2611 and 74256, that added together give a palindrome (76867).

The spelling of 261174256 in words is "two hundred sixty-one million, one hundred seventy-four thousand, two hundred fifty-six".