111872481 has 16 divisors (see below), whose sum is σ = 170631168. Its totient is φ = 63867600.

The previous prime is 111872473. The next prime is 111872491. The reversal of 111872481 is 184278111.

It is not a de Polignac number, because 111872481 - 2³ = 111872473 is a prime.

It is a super-2 number, since 2×111872481² = 25030904010190722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (111872471) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 31296 + ... + 34686.

It is an arithmetic number, because the mean of its divisors is an integer number (10664448).

Almost surely, 2^111872481 is an apocalyptic number.

It is an amenable number.

111872481 is a deficient number, since it is larger than the sum of its proper divisors (58758687).

111872481 is a wasteful number, since it uses less digits than its factorization.

111872481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4972.

The product of its digits is 3584, while the sum is 33.

The square root of 111872481 is about 10576.9788219510. The cubic root of 111872481 is about 481.8454435215.

The spelling of 111872481 in words is "one hundred eleven million, eight hundred seventy-two thousand, four hundred eighty-one".