115545013 has 6 divisors (see below), whose sum is σ = 116451062. Its totient is φ = 114645960.

The previous prime is 115545007. The next prime is 115545071. The reversal of 115545013 is 310545511.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 115390564 + 154449 = 10742^2 + 393^2 .

It is a de Polignac number, because none of the positive numbers 2^k-115545013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115545083) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13795 + ... + 20527.

Almost surely, 2^115545013 is an apocalyptic number.

It is an amenable number.

115545013 is a deficient number, since it is larger than the sum of its proper divisors (906049).

115545013 is an frugal number, since it uses more digits than its factorization.

115545013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6995 (or 6864 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 25.

The square root of 115545013 is about 10749.1866203913. The cubic root of 115545013 is about 487.0614252387.

The spelling of 115545013 in words is "one hundred fifteen million, five hundred forty-five thousand, thirteen".