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111492481 = 105592

111492481 has 3 divisors (see below), whose sum is σ = 111503041. Its totient is φ = 111481922.

The previous prime is 111492439. The next prime is 111492487. The reversal of 111492481 is 184294111.

The square root of 111492481 is 10559.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 184294111 = 593123629.

It is not a de Polignac number, because 111492481 - 29 = 111491969 is a prime.

It is a super-2 number, since 2×1114924812 = 24861146639070722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111492487) 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 2 ways as a sum of consecutive naturals, for example, 5280 + ... + 15838.

Almost surely, 2111492481 is an apocalyptic number.

111492481 is the 10559-th square number.

111492481 is the 5280-th centered octagonal number.

It is an amenable number.

111492481 is a deficient number, since it is larger than the sum of its proper divisors (10560).

111492481 is an frugal number, since it uses more digits than its factorization.

111492481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21118 (or 10559 counting only the distinct ones).

The product of its digits is 2304, while the sum is 31.

The cubic root of 111492481 is about 481.2992592295.

Multiplying 111492481 by its product of digits (2304), we get a square (256878676224 = 5068322).

The spelling of 111492481 in words is "one hundred eleven million, four hundred ninety-two thousand, four hundred eighty-one".

Divisors: 1 10559 111492481