111441257 has 2 divisors, whose sum is σ = 111441258. Its totient is φ = 111441256.

The previous prime is 111441241. The next prime is 111441293. The reversal of 111441257 is 752144111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 107827456 + 3613801 = 10384^2 + 1901^2 .

It is a cyclic number.

It is not a de Polignac number, because 111441257 - 2⁴ = 111441241 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (111441217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55720628 + 55720629.

It is an arithmetic number, because the mean of its divisors is an integer number (55720629).

Almost surely, 2^111441257 is an apocalyptic number.

It is an amenable number.

111441257 is a deficient number, since it is larger than the sum of its proper divisors (1).

111441257 is an equidigital number, since it uses as much as digits as its factorization.

111441257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1120, while the sum is 26.

The square root of 111441257 is about 10556.5741128455. The cubic root of 111441257 is about 481.2255387128.

Adding to 111441257 its reverse (752144111), we get a palindrome (863585368).

The spelling of 111441257 in words is "one hundred eleven million, four hundred forty-one thousand, two hundred fifty-seven".