115520085 has 12 divisors (see below), whose sum is σ = 200234892. Its totient is φ = 61610688.

The previous prime is 115520051. The next prime is 115520143. The reversal of 115520085 is 580025511.

It can be written as a sum of positive squares in 2 ways, for example, as 79014321 + 36505764 = 8889^2 + 6042^2 .

It is not a de Polignac number, because 115520085 - 2¹⁸ = 115257941 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1283512 + ... + 1283601.

It is an arithmetic number, because the mean of its divisors is an integer number (16686241).

Almost surely, 2^115520085 is an apocalyptic number.

115520085 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

115520085 is a deficient number, since it is larger than the sum of its proper divisors (84714807).

115520085 is a wasteful number, since it uses less digits than its factorization.

115520085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2567124 (or 2567121 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 27.

The square root of 115520085 is about 10748.0270282503. The cubic root of 115520085 is about 487.0263960608.

Adding to 115520085 its reverse (580025511), we get a palindrome (695545596).

The spelling of 115520085 in words is "one hundred fifteen million, five hundred twenty thousand, eighty-five".