115804501 has 4 divisors (see below), whose sum is σ = 115831404. Its totient is φ = 115777600.

The previous prime is 115804489. The next prime is 115804519. The reversal of 115804501 is 105408511.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 48580900 + 67223601 = 6970^2 + 8199^2 .

It is a 3-Lehmer number, since φ(115804501) divides (115804501-1)³.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-115804501 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 (115804531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5380 + ... + 16141.

It is an arithmetic number, because the mean of its divisors is an integer number (28957851).

It is a Poulet number, since it divides 2^115804500-1.

Almost surely, 2^115804501 is an apocalyptic number.

115804501 is the 5381-st decagonal number.

It is an amenable number.

115804501 is a deficient number, since it is larger than the sum of its proper divisors (26903).

115804501 is an equidigital number, since it uses as much as digits as its factorization.

115804501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26902.

The product of its (nonzero) digits is 800, while the sum is 25.

The square root of 115804501 is about 10761.2499738646. The cubic root of 115804501 is about 487.4257626162.

The spelling of 115804501 in words is "one hundred fifteen million, eight hundred four thousand, five hundred one".