111572957 has 2 divisors, whose sum is σ = 111572958. Its totient is φ = 111572956.

The previous prime is 111572927. The next prime is 111572963. The reversal of 111572957 is 759275111.

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., 71554681 + 40018276 = 8459^2 + 6326^2 .

It is a cyclic number.

It is not a de Polignac number, because 111572957 - 2¹⁶ = 111507421 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 111572957.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111572927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55786478 + 55786479.

It is an arithmetic number, because the mean of its divisors is an integer number (55786479).

Almost surely, 2^111572957 is an apocalyptic number.

It is an amenable number.

111572957 is a deficient number, since it is larger than the sum of its proper divisors (1).

111572957 is an equidigital number, since it uses as much as digits as its factorization.

111572957 is an evil number, because the sum of its binary digits is even.

The product of its digits is 22050, while the sum is 38.

The square root of 111572957 is about 10562.8100901228. The cubic root of 111572957 is about 481.4150330267.

The spelling of 111572957 in words is "one hundred eleven million, five hundred seventy-two thousand, nine hundred fifty-seven".