111443057 has 12 divisors (see below), whose sum is σ = 125349840. Its totient is φ = 98951160.

The previous prime is 111443053. The next prime is 111443069. The reversal of 111443057 is 750344111.

It is not a de Polignac number, because 111443057 - 2² = 111443053 is a prime.

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (111443051) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5507 + ... + 15912.

It is an arithmetic number, because the mean of its divisors is an integer number (10445820).

Almost surely, 2^111443057 is an apocalyptic number.

It is an amenable number.

111443057 is a deficient number, since it is larger than the sum of its proper divisors (13906783).

111443057 is a wasteful number, since it uses less digits than its factorization.

111443057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21484 (or 21473 counting only the distinct ones).

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

The square root of 111443057 is about 10556.6593674325. The cubic root of 111443057 is about 481.2281296184.

Adding to 111443057 its reverse (750344111), we get a palindrome (861787168).

The spelling of 111443057 in words is "one hundred eleven million, four hundred forty-three thousand, fifty-seven".