112155521 has 16 divisors (see below), whose sum is σ = 120526464. Its totient is φ = 104125824.

The previous prime is 112155517. The next prime is 112155539. The reversal of 112155521 is 125551211.

It is a cyclic number.

It is not a de Polignac number, because 112155521 - 2² = 112155517 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (112155821) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 111995 + ... + 112991.

It is an arithmetic number, because the mean of its divisors is an integer number (7532904).

Almost surely, 2^112155521 is an apocalyptic number.

It is an amenable number.

112155521 is a deficient number, since it is larger than the sum of its proper divisors (8370943).

112155521 is an equidigital number, since it uses as much as digits as its factorization.

112155521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1160.

The product of its digits is 500, while the sum is 23.

The square root of 112155521 is about 10590.3503719188. The cubic root of 112155521 is about 482.2514613922.

The spelling of 112155521 in words is "one hundred twelve million, one hundred fifty-five thousand, five hundred twenty-one".