115011555 has 16 divisors (see below), whose sum is σ = 184957344. Its totient is φ = 61026560.

The previous prime is 115011553. The next prime is 115011557. The reversal of 115011555 is 555110511.

It is an interprime number because it is at equal distance from previous prime (115011553) and next prime (115011557).

It is not a de Polignac number, because 115011555 - 2¹ = 115011553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (115011553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16506 + ... + 22415.

It is an arithmetic number, because the mean of its divisors is an integer number (11559834).

Almost surely, 2^115011555 is an apocalyptic number.

115011555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

115011555 is a deficient number, since it is larger than the sum of its proper divisors (69945789).

115011555 is a wasteful number, since it uses less digits than its factorization.

115011555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39126.

The product of its (nonzero) digits is 625, while the sum is 24.

The square root of 115011555 is about 10724.3440358840. The cubic root of 115011555 is about 486.3106999029.

The spelling of 115011555 in words is "one hundred fifteen million, eleven thousand, five hundred fifty-five".