111564223 has 2 divisors, whose sum is σ = 111564224. Its totient is φ = 111564222.

The previous prime is 111564137. The next prime is 111564281. The reversal of 111564223 is 322465111.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 111564223 - 2¹³ = 111556031 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111561223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55782111 + 55782112.

It is an arithmetic number, because the mean of its divisors is an integer number (55782112).

Almost surely, 2^111564223 is an apocalyptic number.

111564223 is a deficient number, since it is larger than the sum of its proper divisors (1).

111564223 is an equidigital number, since it uses as much as digits as its factorization.

111564223 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1440, while the sum is 25.

The square root of 111564223 is about 10562.3966503820. The cubic root of 111564223 is about 481.4024708768.

The spelling of 111564223 in words is "one hundred eleven million, five hundred sixty-four thousand, two hundred twenty-three".