115649559 has 16 divisors (see below), whose sum is σ = 172938240. Its totient is φ = 76377240.

The previous prime is 115649539. The next prime is 115649581. The reversal of 115649559 is 955946511.

It is a happy number.

115649559 is a `hidden beast` number, since 1 + 1 + 56 + 49 + 559 = 666.

It is not a de Polignac number, because 115649559 - 2¹³ = 115641367 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115649539) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17127 + ... + 22904.

It is an arithmetic number, because the mean of its divisors is an integer number (10808640).

Almost surely, 2^115649559 is an apocalyptic number.

115649559 is a deficient number, since it is larger than the sum of its proper divisors (57288681).

115649559 is a wasteful number, since it uses less digits than its factorization.

115649559 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40147 (or 40141 counting only the distinct ones).

The product of its digits is 243000, while the sum is 45.

The square root of 115649559 is about 10754.0484934744. The cubic root of 115649559 is about 487.2082799073.

The spelling of 115649559 in words is "one hundred fifteen million, six hundred forty-nine thousand, five hundred fifty-nine".