111344561 has 8 divisors (see below), whose sum is σ = 114313248. Its totient is φ = 108388000.

The previous prime is 111344539. The next prime is 111344567. The reversal of 111344561 is 165443111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 111344561 - 2²² = 107150257 is a prime.

It is a super-2 number, since 2×111344561² = 24795222528565442, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 111344561.

It is not an unprimeable number, because it can be changed into a prime (111344567) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17366 + ... + 22896.

It is an arithmetic number, because the mean of its divisors is an integer number (14289156).

Almost surely, 2^111344561 is an apocalyptic number.

It is an amenable number.

111344561 is a deficient number, since it is larger than the sum of its proper divisors (2968687).

111344561 is an equidigital number, since it uses as much as digits as its factorization.

111344561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6063.

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

The square root of 111344561 is about 10551.9932240312. The cubic root of 111344561 is about 481.0863142431.

Adding to 111344561 its reverse (165443111), we get a palindrome (276787672).

The spelling of 111344561 in words is "one hundred eleven million, three hundred forty-four thousand, five hundred sixty-one".