111223457 has 4 divisors (see below), whose sum is σ = 112747140. Its totient is φ = 109699776.

The previous prime is 111223451. The next prime is 111223471. The reversal of 111223457 is 754322111.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 89283601 + 21939856 = 9449^2 + 4684^2 .

It is a cyclic number.

It is not a de Polignac number, because 111223457 - 2⁶ = 111223393 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (111223451) 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, 761732 + ... + 761877.

It is an arithmetic number, because the mean of its divisors is an integer number (28186785).

Almost surely, 2^111223457 is an apocalyptic number.

It is an amenable number.

111223457 is a deficient number, since it is larger than the sum of its proper divisors (1523683).

111223457 is an equidigital number, since it uses as much as digits as its factorization.

111223457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1523682.

The product of its digits is 1680, while the sum is 26.

The square root of 111223457 is about 10546.2532209311. The cubic root of 111223457 is about 480.9118329993.

Adding to 111223457 its reverse (754322111), we get a palindrome (865545568).

The spelling of 111223457 in words is "one hundred eleven million, two hundred twenty-three thousand, four hundred fifty-seven".