111106557 has 12 divisors (see below), whose sum is σ = 161062044. Its totient is φ = 73805760.

The previous prime is 111106529. The next prime is 111106571. The reversal of 111106557 is 755601111.

It is a happy number.

111106557 is a `hidden beast` number, since 1 + 1 + 1 + 1 + 0 + 655 + 7 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 33419961 + 77686596 = 5781^2 + 8814^2 .

It is not a de Polignac number, because 111106557 - 2⁶ = 111106493 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 111106557.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111106157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19438 + ... + 24495.

It is an arithmetic number, because the mean of its divisors is an integer number (13421837).

Almost surely, 2^111106557 is an apocalyptic number.

It is an amenable number.

111106557 is a deficient number, since it is larger than the sum of its proper divisors (49955487).

111106557 is a wasteful number, since it uses less digits than its factorization.

111106557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44220 (or 44217 counting only the distinct ones).

The product of its (nonzero) digits is 1050, while the sum is 27.

The square root of 111106557 is about 10540.7095112236. The cubic root of 111106557 is about 480.7432885146.

Adding to 111106557 its reverse (755601111), we get a palindrome (866707668).

The spelling of 111106557 in words is "one hundred eleven million, one hundred six thousand, five hundred fifty-seven".