111665051 has 8 divisors (see below), whose sum is σ = 116212320. Its totient is φ = 107164288.

The previous prime is 111665041. The next prime is 111665053. The reversal of 111665051 is 150566111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111665051 is a prime.

It is a super-2 number, since 2×111665051² = 24938167229665202, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 111665051.

It is not an unprimeable number, because it can be changed into a prime (111665053) 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 7 ways as a sum of consecutive naturals, for example, 6686 + ... + 16371.

It is an arithmetic number, because the mean of its divisors is an integer number (14526540).

Almost surely, 2^111665051 is an apocalyptic number.

111665051 is a deficient number, since it is larger than the sum of its proper divisors (4547269).

111665051 is a wasteful number, since it uses less digits than its factorization.

111665051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23253.

The product of its (nonzero) digits is 900, while the sum is 26.

The square root of 111665051 is about 10567.1685422350. The cubic root of 111665051 is about 481.5474523407.

The spelling of 111665051 in words is "one hundred eleven million, six hundred sixty-five thousand, fifty-one".