112815261 has 20 divisors (see below), whose sum is σ = 181491772. Its totient is φ = 69424128.

The previous prime is 112815259. The next prime is 112815277. The reversal of 112815261 is 162518211.

It can be written as a sum of positive squares in 2 ways, for example, as 56475225 + 56340036 = 7515^2 + 7506^2 .

It is not a de Polignac number, because 112815261 - 2¹ = 112815259 is a prime.

It is a super-2 number, since 2×112815261² = 25454566228996242, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112815251) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 52516 + ... + 54621.

Almost surely, 2^112815261 is an apocalyptic number.

It is an amenable number.

112815261 is a deficient number, since it is larger than the sum of its proper divisors (68676511).

112815261 is a wasteful number, since it uses less digits than its factorization.

112815261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107162 (or 107153 counting only the distinct ones).

The product of its digits is 960, while the sum is 27.

The square root of 112815261 is about 10621.4528667221. The cubic root of 112815261 is about 483.1952067713.

The spelling of 112815261 in words is "one hundred twelve million, eight hundred fifteen thousand, two hundred sixty-one".