115505145 has 24 divisors (see below), whose sum is σ = 228810816. Its totient is φ = 52802208.

The previous prime is 115505141. The next prime is 115505153. The reversal of 115505145 is 541505511.

115505145 is a `hidden beast` number, since 1 + 15 + 505 + 145 = 666.

It is not a de Polignac number, because 115505145 - 2² = 115505141 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (115505141) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 183027 + ... + 183656.

It is an arithmetic number, because the mean of its divisors is an integer number (9533784).

Almost surely, 2^115505145 is an apocalyptic number.

115505145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

115505145 is a deficient number, since it is larger than the sum of its proper divisors (113305671).

115505145 is a wasteful number, since it uses less digits than its factorization.

115505145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366701 (or 366698 counting only the distinct ones).

The product of its (nonzero) digits is 2500, while the sum is 27.

The square root of 115505145 is about 10747.3319944998. The cubic root of 115505145 is about 487.0053997465.

The spelling of 115505145 in words is "one hundred fifteen million, five hundred five thousand, one hundred forty-five".