115531201 has 4 divisors (see below), whose sum is σ = 122327172. Its totient is φ = 108735232.

The previous prime is 115531181. The next prime is 115531219. The reversal of 115531201 is 102135511.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 87441201 + 28090000 = 9351^2 + 5300^2 .

It is a cyclic number.

It is not a de Polignac number, because 115531201 - 2⁹ = 115530689 is a prime.

It is not an unprimeable number, because it can be changed into a prime (115531261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3397960 + ... + 3397993.

It is an arithmetic number, because the mean of its divisors is an integer number (30581793).

Almost surely, 2^115531201 is an apocalyptic number.

It is an amenable number.

115531201 is a deficient number, since it is larger than the sum of its proper divisors (6795971).

115531201 is an equidigital number, since it uses as much as digits as its factorization.

115531201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6795970.

The product of its (nonzero) digits is 150, while the sum is 19.

The square root of 115531201 is about 10748.5441339746. The cubic root of 115531201 is about 487.0420170436.

Adding to 115531201 its reverse (102135511), we get a palindrome (217666712).

The spelling of 115531201 in words is "one hundred fifteen million, five hundred thirty-one thousand, two hundred one".