111996537 has 4 divisors (see below), whose sum is σ = 149328720. Its totient is φ = 74664356.

The previous prime is 111996523. The next prime is 111996551. The reversal of 111996537 is 735699111.

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.

It is an interprime number because it is at equal distance from previous prime (111996523) and next prime (111996551).

It is a cyclic number.

It is not a de Polignac number, because 111996537 - 2⁸ = 111996281 is a prime.

It is not an unprimeable number, because it can be changed into a prime (111996517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18666087 + ... + 18666092.

It is an arithmetic number, because the mean of its divisors is an integer number (37332180).

Almost surely, 2^111996537 is an apocalyptic number.

It is an amenable number.

111996537 is a deficient number, since it is larger than the sum of its proper divisors (37332183).

111996537 is an equidigital number, since it uses as much as digits as its factorization.

111996537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37332182.

The product of its digits is 51030, while the sum is 42.

The square root of 111996537 is about 10582.8416316224. The cubic root of 111996537 is about 482.0234847346.

The spelling of 111996537 in words is "one hundred eleven million, nine hundred ninety-six thousand, five hundred thirty-seven".