115340521 has 4 divisors (see below), whose sum is σ = 116075332. Its totient is φ = 114605712.

The previous prime is 115340501. The next prime is 115340527. The reversal of 115340521 is 125043511.

115340521 = T₄₅₁ + T₄₅₂ + ... + T₉₂₁.

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 34987225 + 80353296 = 5915^2 + 8964^2 .

It is a cyclic number.

It is not a de Polignac number, because 115340521 - 2¹⁷ = 115209449 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 115340492 and 115340501.

It is not an unprimeable number, because it can be changed into a prime (115340527) 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 3 ways as a sum of consecutive naturals, for example, 367170 + ... + 367483.

It is an arithmetic number, because the mean of its divisors is an integer number (29018833).

Almost surely, 2^115340521 is an apocalyptic number.

It is an amenable number.

115340521 is a deficient number, since it is larger than the sum of its proper divisors (734811).

115340521 is an equidigital number, since it uses as much as digits as its factorization.

115340521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 734810.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 115340521 is about 10739.6704325598. The cubic root of 115340521 is about 486.7739211806.

The spelling of 115340521 in words is "one hundred fifteen million, three hundred forty thousand, five hundred twenty-one".