111640053 has 16 divisors (see below), whose sum is σ = 175985280. Its totient is φ = 61594176.

The previous prime is 111640049. The next prime is 111640057. The reversal of 111640053 is 350046111.

It is an interprime number because it is at equal distance from previous prime (111640049) and next prime (111640057).

It is not a de Polignac number, because 111640053 - 2² = 111640049 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111640057) 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 15 ways as a sum of consecutive naturals, for example, 91050 + ... + 92267.

It is an arithmetic number, because the mean of its divisors is an integer number (10999080).

Almost surely, 2^111640053 is an apocalyptic number.

It is an amenable number.

111640053 is a deficient number, since it is larger than the sum of its proper divisors (64345227).

111640053 is a wasteful number, since it uses less digits than its factorization.

111640053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183356.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 111640053 is about 10565.9856615462. The cubic root of 111640053 is about 481.5115156368.

Adding to 111640053 its reverse (350046111), we get a palindrome (461686164).

The spelling of 111640053 in words is "one hundred eleven million, six hundred forty thousand, fifty-three".