111353521 has 2 divisors, whose sum is σ = 111353522. Its totient is φ = 111353520.

The previous prime is 111353513. The next prime is 111353551. The reversal of 111353521 is 125353111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 87235600 + 24117921 = 9340^2 + 4911^2 .

It is a cyclic number.

It is not a de Polignac number, because 111353521 - 2³ = 111353513 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 111353492 and 111353501.

It is not a weakly prime, because it can be changed into another prime (111353551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55676760 + 55676761.

It is an arithmetic number, because the mean of its divisors is an integer number (55676761).

Almost surely, 2^111353521 is an apocalyptic number.

It is an amenable number.

111353521 is a deficient number, since it is larger than the sum of its proper divisors (1).

111353521 is an equidigital number, since it uses as much as digits as its factorization.

111353521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 450, while the sum is 22.

The square root of 111353521 is about 10552.4177798266. The cubic root of 111353521 is about 481.0992183841.

The spelling of 111353521 in words is "one hundred eleven million, three hundred fifty-three thousand, five hundred twenty-one".