112507561 has 4 divisors (see below), whose sum is σ = 112644432. Its totient is φ = 112370692.

The previous prime is 112507543. The next prime is 112507601. The reversal of 112507561 is 165705211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 112507561 - 2⁵ = 112507529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (112507261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67195 + ... + 68848.

It is an arithmetic number, because the mean of its divisors is an integer number (28161108).

Almost surely, 2^112507561 is an apocalyptic number.

It is an amenable number.

112507561 is a deficient number, since it is larger than the sum of its proper divisors (136871).

112507561 is an equidigital number, since it uses as much as digits as its factorization.

112507561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136870.

The product of its (nonzero) digits is 2100, while the sum is 28.

The square root of 112507561 is about 10606.9581407678. The cubic root of 112507561 is about 482.7555069720.

The spelling of 112507561 in words is "one hundred twelve million, five hundred seven thousand, five hundred sixty-one".