115511506 has 8 divisors (see below), whose sum is σ = 189018864. Its totient is φ = 52505220.

The previous prime is 115511503. The next prime is 115511531. The reversal of 115511506 is 605115511.

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

It is not an unprimeable number, because it can be changed into a prime (115511503) 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, 2625240 + ... + 2625283.

It is an arithmetic number, because the mean of its divisors is an integer number (23627358).

Almost surely, 2^115511506 is an apocalyptic number.

115511506 is a deficient number, since it is larger than the sum of its proper divisors (73507358).

115511506 is a wasteful number, since it uses less digits than its factorization.

115511506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5250536.

The product of its (nonzero) digits is 750, while the sum is 25.

The square root of 115511506 is about 10747.6279243375. The cubic root of 115511506 is about 487.0143395632.

It can be divided in two parts, 11 and 5511506, that multiplied together give a triangular number (60626566 = T₁₁₀₁₁).

The spelling of 115511506 in words is "one hundred fifteen million, five hundred eleven thousand, five hundred six".