111155563 has 2 divisors, whose sum is σ = 111155564. Its totient is φ = 111155562.

The previous prime is 111155557. The next prime is 111155581. The reversal of 111155563 is 365551111.

It is a weak prime.

It is an emirp because it is prime and its reverse (365551111) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111155563 is a prime.

It is not a weakly prime, because it can be changed into another prime (111155543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55577781 + 55577782.

It is an arithmetic number, because the mean of its divisors is an integer number (55577782).

Almost surely, 2^111155563 is an apocalyptic number.

111155563 is a deficient number, since it is larger than the sum of its proper divisors (1).

111155563 is an equidigital number, since it uses as much as digits as its factorization.

111155563 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2250, while the sum is 28.

The square root of 111155563 is about 10543.0338612754. The cubic root of 111155563 is about 480.8139589392.

The spelling of 111155563 in words is "one hundred eleven million, one hundred fifty-five thousand, five hundred sixty-three".