115172385 has 32 divisors (see below), whose sum is σ = 193536000. Its totient is φ = 58373568.

The previous prime is 115172383. The next prime is 115172389. The reversal of 115172385 is 583271511.

It is not a de Polignac number, because 115172385 - 2¹ = 115172383 is a prime.

It is not an unprimeable number, because it can be changed into a prime (115172383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 56616 + ... + 58614.

It is an arithmetic number, because the mean of its divisors is an integer number (6048000).

Almost surely, 2^115172385 is an apocalyptic number.

115172385 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

115172385 is a deficient number, since it is larger than the sum of its proper divisors (78363615).

115172385 is a wasteful number, since it uses less digits than its factorization.

115172385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2197.

The product of its digits is 8400, while the sum is 33.

The square root of 115172385 is about 10731.8397770373. The cubic root of 115172385 is about 486.5372769073.

It can be divided in two parts, 1151 and 72385, that added together give a triangular number (73536 = T₃₈₃).

The spelling of 115172385 in words is "one hundred fifteen million, one hundred seventy-two thousand, three hundred eighty-five".