111197057 has 2 divisors, whose sum is σ = 111197058. Its totient is φ = 111197056.

The previous prime is 111197033. The next prime is 111197059. The reversal of 111197057 is 750791111.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 110334016 + 863041 = 10504^2 + 929^2 .

It is a cyclic number.

It is not a de Polignac number, because 111197057 - 2⁸ = 111196801 is a prime.

It is a super-2 number, since 2×111197057² = 24729570970922498, which contains 22 as substring.

Together with 111197059, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (111197059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55598528 + 55598529.

It is an arithmetic number, because the mean of its divisors is an integer number (55598529).

Almost surely, 2^111197057 is an apocalyptic number.

It is an amenable number.

111197057 is a deficient number, since it is larger than the sum of its proper divisors (1).

111197057 is an equidigital number, since it uses as much as digits as its factorization.

111197057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2205, while the sum is 32.

The square root of 111197057 is about 10545.0015173067. The cubic root of 111197057 is about 480.8737802438.

Subtracting from 111197057 its sum of digits (32), we obtain a square (111197025 = 10545²).

The spelling of 111197057 in words is "one hundred eleven million, one hundred ninety-seven thousand, fifty-seven".