115211245 has 4 divisors (see below), whose sum is σ = 138253500. Its totient is φ = 92168992.

The previous prime is 115211179. The next prime is 115211251. The reversal of 115211245 is 542112511.

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 58690921 + 56520324 = 7661^2 + 7518^2 .

It is a cyclic number.

It is not a de Polignac number, because 115211245 - 2¹¹ = 115209197 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11521120 + ... + 11521129.

It is an arithmetic number, because the mean of its divisors is an integer number (34563375).

Almost surely, 2^115211245 is an apocalyptic number.

It is an amenable number.

115211245 is a deficient number, since it is larger than the sum of its proper divisors (23042255).

115211245 is an equidigital number, since it uses as much as digits as its factorization.

115211245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23042254.

The product of its digits is 400, while the sum is 22.

The square root of 115211245 is about 10733.6501247246. The cubic root of 115211245 is about 486.5919911589.

Adding to 115211245 its reverse (542112511), we get a palindrome (657323756).

The spelling of 115211245 in words is "one hundred fifteen million, two hundred eleven thousand, two hundred forty-five".