111579397 has 2 divisors, whose sum is σ = 111579398. Its totient is φ = 111579396.

The previous prime is 111579379. The next prime is 111579401. The reversal of 111579397 is 793975111.

Together with previous prime (111579379) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 81974916 + 29604481 = 9054^2 + 5441^2 .

It is a cyclic number.

It is not a de Polignac number, because 111579397 - 2¹⁵ = 111546629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111576397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55789698 + 55789699.

It is an arithmetic number, because the mean of its divisors is an integer number (55789699).

Almost surely, 2^111579397 is an apocalyptic number.

It is an amenable number.

111579397 is a deficient number, since it is larger than the sum of its proper divisors (1).

111579397 is an equidigital number, since it uses as much as digits as its factorization.

111579397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 59535, while the sum is 43.

The square root of 111579397 is about 10563.1149288456. The cubic root of 111579397 is about 481.4242952866.

The spelling of 111579397 in words is "one hundred eleven million, five hundred seventy-nine thousand, three hundred ninety-seven".