113265261 has 12 divisors (see below), whose sum is σ = 164310588. Its totient is φ = 75184704.

The previous prime is 113265259. The next prime is 113265281. The reversal of 113265261 is 162562311.

113265261 is a `hidden beast` number, since 1 + 1 + 3 + 2 + 652 + 6 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 15848361 + 97416900 = 3981^2 + 9870^2 .

It is not a de Polignac number, because 113265261 - 2¹ = 113265259 is a prime.

It is a Smith number, since the sum of its digits (27) 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 (113265281) 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, 24910 + ... + 29103.

It is an arithmetic number, because the mean of its divisors is an integer number (13692549).

Almost surely, 2^113265261 is an apocalyptic number.

It is an amenable number.

113265261 is a deficient number, since it is larger than the sum of its proper divisors (51045327).

113265261 is a wasteful number, since it uses less digits than its factorization.

113265261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54252 (or 54249 counting only the distinct ones).

The product of its digits is 2160, while the sum is 27.

The square root of 113265261 is about 10642.6153270707. The cubic root of 113265261 is about 483.8368143373.

It can be divided in two parts, 113265 and 261, that added together give a triangular number (113526 = T₄₇₆).

The spelling of 113265261 in words is "one hundred thirteen million, two hundred sixty-five thousand, two hundred sixty-one".