112521685 has 4 divisors (see below), whose sum is σ = 135026028. Its totient is φ = 90017344.

The previous prime is 112521679. The next prime is 112521707. The reversal of 112521685 is 586125211.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 69789316 + 42732369 = 8354^2 + 6537^2 .

It is a cyclic number.

It is not a de Polignac number, because 112521685 - 2¹⁹ = 111997397 is a prime.

It is a super-2 number, since 2×112521685² = 25322259190478450, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11252164 + ... + 11252173.

It is an arithmetic number, because the mean of its divisors is an integer number (33756507).

Almost surely, 2^112521685 is an apocalyptic number.

It is an amenable number.

112521685 is a deficient number, since it is larger than the sum of its proper divisors (22504343).

112521685 is an equidigital number, since it uses as much as digits as its factorization.

112521685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22504342.

The product of its digits is 4800, while the sum is 31.

The square root of 112521685 is about 10607.6239092457. The cubic root of 112521685 is about 482.7757075506.

Adding to 112521685 its reverse (586125211), we get a palindrome (698646896).

The spelling of 112521685 in words is "one hundred twelve million, five hundred twenty-one thousand, six hundred eighty-five".