111057 has 4 divisors (see below), whose sum is σ = 148080. Its totient is φ = 74036.

The previous prime is 111053. The next prime is 111091. The reversal of 111057 is 750111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 750111 = 3 ⋅250037.

It is a cyclic number.

It is not a de Polignac number, because 111057 - 2² = 111053 is a prime.

It is a D-number.

111057 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (111053) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18507 + ... + 18512.

It is an arithmetic number, because the mean of its divisors is an integer number (37020).

2¹¹¹⁰⁵⁷ is an apocalyptic number.

It is an amenable number.

111057 is a deficient number, since it is larger than the sum of its proper divisors (37023).

111057 is an equidigital number, since it uses as much as digits as its factorization.

111057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37022.

The product of its (nonzero) digits is 35, while the sum is 15.

The square root of 111057 is about 333.2521567822. The cubic root of 111057 is about 48.0671802370.

Adding to 111057 its reverse (750111), we get a palindrome (861168).

The spelling of 111057 in words is "one hundred eleven thousand, fifty-seven".