111087257 has 2 divisors, whose sum is σ = 111087258. Its totient is φ = 111087256.

The previous prime is 111087211. The next prime is 111087259. The reversal of 111087257 is 752780111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 101284096 + 9803161 = 10064^2 + 3131^2 .

It is a cyclic number.

It is not a de Polignac number, because 111087257 - 2⁸ = 111087001 is a prime.

Together with 111087259, 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 (111087259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55543628 + 55543629.

It is an arithmetic number, because the mean of its divisors is an integer number (55543629).

Almost surely, 2^111087257 is an apocalyptic number.

It is an amenable number.

111087257 is a deficient number, since it is larger than the sum of its proper divisors (1).

111087257 is an equidigital number, since it uses as much as digits as its factorization.

111087257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3920, while the sum is 32.

The square root of 111087257 is about 10539.7939733185. The cubic root of 111087257 is about 480.7154507253.

The spelling of 111087257 in words is "one hundred eleven million, eighty-seven thousand, two hundred fifty-seven".