261112 has 16 divisors (see below), whose sum is σ = 495360. Its totient is φ = 129024.

The previous prime is 261101. The next prime is 261127. The reversal of 261112 is 211162.

It is a junction number, because it is equal to n+sod(n) for n = 261092 and 261101.

It is a congruent number.

It is an unprimeable number.

261112 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 888 + ... + 1144.

It is an arithmetic number, because the mean of its divisors is an integer number (30960).

2²⁶¹¹¹² is an apocalyptic number.

It is an amenable number.

261112 is a deficient number, since it is larger than the sum of its proper divisors (234248).

261112 is a wasteful number, since it uses less digits than its factorization.

261112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 390 (or 386 counting only the distinct ones).

The product of its digits is 24, while the sum is 13.

The square root of 261112 is about 510.9911936619. The cubic root of 261112 is about 63.9159051743.

Adding to 261112 its reverse (211162), we get a palindrome (472274).

It can be divided in two parts, 261 and 112, that added together give a palindrome (373).

The spelling of 261112 in words is "two hundred sixty-one thousand, one hundred twelve".