111093581 has 2 divisors, whose sum is σ = 111093582. Its totient is φ = 111093580.

The previous prime is 111093533. The next prime is 111093599. The reversal of 111093581 is 185390111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 99301225 + 11792356 = 9965^2 + 3434^2 .

It is an emirp because it is prime and its reverse (185390111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 111093581 - 2¹⁸ = 110831437 is a prime.

It is a super-2 number, since 2×111093581² = 24683567478807122, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111093481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55546790 + 55546791.

It is an arithmetic number, because the mean of its divisors is an integer number (55546791).

Almost surely, 2^111093581 is an apocalyptic number.

It is an amenable number.

111093581 is a deficient number, since it is larger than the sum of its proper divisors (1).

111093581 is an equidigital number, since it uses as much as digits as its factorization.

111093581 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1080, while the sum is 29.

The square root of 111093581 is about 10540.0939749131. The cubic root of 111093581 is about 480.7245726442.

The spelling of 111093581 in words is "one hundred eleven million, ninety-three thousand, five hundred eighty-one".