115779015 has 48 divisors (see below), whose sum is σ = 222258816. Its totient is φ = 55281600.

The previous prime is 115779011. The next prime is 115779019. The reversal of 115779015 is 510977511.

It is an interprime number because it is at equal distance from previous prime (115779011) and next prime (115779019).

It is not a de Polignac number, because 115779015 - 2² = 115779011 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115779011) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 31420 + ... + 34910.

It is an arithmetic number, because the mean of its divisors is an integer number (4630392).

Almost surely, 2^115779015 is an apocalyptic number.

115779015 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

115779015 is a deficient number, since it is larger than the sum of its proper divisors (106479801).

115779015 is a wasteful number, since it uses less digits than its factorization.

115779015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3580 (or 3577 counting only the distinct ones).

The product of its (nonzero) digits is 11025, while the sum is 36.

The square root of 115779015 is about 10760.0657525872. The cubic root of 115779015 is about 487.3900027960.

The spelling of 115779015 in words is "one hundred fifteen million, seven hundred seventy-nine thousand, fifteen".