115515149 has 8 divisors (see below), whose sum is σ = 119638560. Its totient is φ = 111401136.

The previous prime is 115515137. The next prime is 115515173. The reversal of 115515149 is 941515511.

It is a happy number.

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 115515149 - 2⁴ = 115515133 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115515199) 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, 30794 + ... + 34340.

It is an arithmetic number, because the mean of its divisors is an integer number (14954820).

Almost surely, 2^115515149 is an apocalyptic number.

It is an amenable number.

115515149 is a deficient number, since it is larger than the sum of its proper divisors (4123411).

115515149 is a wasteful number, since it uses less digits than its factorization.

115515149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4699.

The product of its digits is 4500, while the sum is 32.

The square root of 115515149 is about 10747.7974022588. The cubic root of 115515149 is about 487.0194593261.

The spelling of 115515149 in words is "one hundred fifteen million, five hundred fifteen thousand, one hundred forty-nine".