112521505 has 4 divisors (see below), whose sum is σ = 135025812. Its totient is φ = 90017200.

The previous prime is 112521499. The next prime is 112521547. The reversal of 112521505 is 505125211.

It is a happy number.

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 16638241 + 95883264 = 4079^2 + 9792^2 .

It is a de Polignac number, because none of the positive numbers 2^k-112521505 is a prime.

It is a super-2 number, since 2×112521505² = 25322178174930050, which contains 22 as substring.

It is a Smith number, since the sum of its digits (22) 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 an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11252146 + ... + 11252155.

It is an arithmetic number, because the mean of its divisors is an integer number (33756453).

Almost surely, 2^112521505 is an apocalyptic number.

It is an amenable number.

112521505 is a deficient number, since it is larger than the sum of its proper divisors (22504307).

112521505 is an equidigital number, since it uses as much as digits as its factorization.

112521505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22504306.

The product of its (nonzero) digits is 500, while the sum is 22.

The square root of 112521505 is about 10607.6154247786. The cubic root of 112521505 is about 482.7754501197.

Adding to 112521505 its reverse (505125211), we get a palindrome (617646716).

The spelling of 112521505 in words is "one hundred twelve million, five hundred twenty-one thousand, five hundred five".