111450081 has 4 divisors (see below), whose sum is σ = 148600112. Its totient is φ = 74300052.

The previous prime is 111450077. The next prime is 111450091. The reversal of 111450081 is 180054111.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 180054111 = 3 ⋅60018037.

It is not a de Polignac number, because 111450081 - 2² = 111450077 is a prime.

It is a super-2 number, since 2×111450081² = 24842241109813122, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (111450071) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18575011 + ... + 18575016.

It is an arithmetic number, because the mean of its divisors is an integer number (37150028).

Almost surely, 2^111450081 is an apocalyptic number.

It is an amenable number.

111450081 is a deficient number, since it is larger than the sum of its proper divisors (37150031).

111450081 is an equidigital number, since it uses as much as digits as its factorization.

111450081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37150030.

The product of its (nonzero) digits is 160, while the sum is 21.

The square root of 111450081 is about 10556.9920431911. The cubic root of 111450081 is about 481.2382396407.

The spelling of 111450081 in words is "one hundred eleven million, four hundred fifty thousand, eighty-one".