111613445 has 4 divisors (see below), whose sum is σ = 133936140. Its totient is φ = 89290752.

The previous prime is 111613433. The next prime is 111613451. The reversal of 111613445 is 544316111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 544316111 = 11411 ⋅47701.

It can be written as a sum of positive squares in 2 ways, for example, as 32741284 + 78872161 = 5722^2 + 8881^2 .

It is a cyclic number.

It is not a de Polignac number, because 111613445 - 2⁸ = 111613189 is a prime.

It is a super-2 number, since 2×111613445² = 24915122209536050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11161340 + ... + 11161349.

It is an arithmetic number, because the mean of its divisors is an integer number (33484035).

Almost surely, 2^111613445 is an apocalyptic number.

It is an amenable number.

111613445 is a deficient number, since it is larger than the sum of its proper divisors (22322695).

111613445 is an equidigital number, since it uses as much as digits as its factorization.

111613445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22322694.

The product of its digits is 1440, while the sum is 26.

The square root of 111613445 is about 10564.7264517355. The cubic root of 111613445 is about 481.4732585297.

Adding to 111613445 its reverse (544316111), we get a palindrome (655929556).

The spelling of 111613445 in words is "one hundred eleven million, six hundred thirteen thousand, four hundred forty-five".