111145799 has 2 divisors, whose sum is σ = 111145800. Its totient is φ = 111145798.

The previous prime is 111145789. The next prime is 111145807. The reversal of 111145799 is 997541111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 111145799 - 2⁸ = 111145543 is a prime.

It is a Sophie Germain prime.

It is a plaindrome in base 10.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111145739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55572899 + 55572900.

It is an arithmetic number, because the mean of its divisors is an integer number (55572900).

Almost surely, 2^111145799 is an apocalyptic number.

111145799 is a deficient number, since it is larger than the sum of its proper divisors (1).

111145799 is an equidigital number, since it uses as much as digits as its factorization.

111145799 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11340, while the sum is 38.

The square root of 111145799 is about 10542.5707965372. The cubic root of 111145799 is about 480.7998801567.

The spelling of 111145799 in words is "one hundred eleven million, one hundred forty-five thousand, seven hundred ninety-nine".