111620053 has 4 divisors (see below), whose sum is σ = 111869100. Its totient is φ = 111371008.

The previous prime is 111620051. The next prime is 111620059. The reversal of 111620053 is 350026111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 350026111 = 13229 ⋅26459.

It can be written as a sum of positive squares in 2 ways, for example, as 22638564 + 88981489 = 4758^2 + 9433^2 .

It is a cyclic number.

It is not a de Polignac number, because 111620053 - 2¹ = 111620051 is a prime.

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 111620053.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111620051) 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, 123850 + ... + 124747.

It is an arithmetic number, because the mean of its divisors is an integer number (27967275).

Almost surely, 2^111620053 is an apocalyptic number.

It is an amenable number.

111620053 is a deficient number, since it is larger than the sum of its proper divisors (249047).

111620053 is an equidigital number, since it uses as much as digits as its factorization.

111620053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249046.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 111620053 is about 10565.0391859188. The cubic root of 111620053 is about 481.4827601105.

Adding to 111620053 its reverse (350026111), we get a palindrome (461646164).

The spelling of 111620053 in words is "one hundred eleven million, six hundred twenty thousand, fifty-three".