115215105 has 8 divisors (see below), whose sum is σ = 184344192. Its totient is φ = 61448048.

The previous prime is 115215049. The next prime is 115215109. The reversal of 115215105 is 501512511.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 115215105 - 2⁶ = 115215041 is a prime.

It is a super-2 number, since 2×115215105² = 26549040840322050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (115215109) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3840489 + ... + 3840518.

It is an arithmetic number, because the mean of its divisors is an integer number (23043024).

Almost surely, 2^115215105 is an apocalyptic number.

115215105 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

115215105 is a deficient number, since it is larger than the sum of its proper divisors (69129087).

115215105 is an equidigital number, since it uses as much as digits as its factorization.

115215105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7681015.

The product of its (nonzero) digits is 250, while the sum is 21.

The square root of 115215105 is about 10733.8299315761. The cubic root of 115215105 is about 486.5974253047.

Adding to 115215105 its reverse (501512511), we get a palindrome (616727616).

The spelling of 115215105 in words is "one hundred fifteen million, two hundred fifteen thousand, one hundred five".