111052521 has 12 divisors (see below), whose sum is σ = 161565040. Its totient is φ = 73501560.

The previous prime is 111052489. The next prime is 111052541. The reversal of 111052521 is 125250111.

It is not a de Polignac number, because 111052521 - 2⁵ = 111052489 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111052494 and 111052503.

It is not an unprimeable number, because it can be changed into a prime (111052541) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 43135 + ... + 45636.

Almost surely, 2^111052521 is an apocalyptic number.

It is an amenable number.

111052521 is a deficient number, since it is larger than the sum of its proper divisors (50512519).

111052521 is a wasteful number, since it uses less digits than its factorization.

111052521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88916 (or 88913 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 18.

The square root of 111052521 is about 10538.1459944337. The cubic root of 111052521 is about 480.6653403493.

The spelling of 111052521 in words is "one hundred eleven million, fifty-two thousand, five hundred twenty-one".