2015459 has 4 divisors (see below), whose sum is σ = 2021880. Its totient is φ = 2009040.

The previous prime is 2015443. The next prime is 2015473. The reversal of 2015459 is 9545102.

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

It is a cyclic number.

It is not a de Polignac number, because 2015459 - 2⁴ = 2015443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2015359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2714 + ... + 3375.

It is an arithmetic number, because the mean of its divisors is an integer number (505470).

2^2015459 is an apocalyptic number.

2015459 is a deficient number, since it is larger than the sum of its proper divisors (6421).

2015459 is an equidigital number, since it uses as much as digits as its factorization.

2015459 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6420.

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 2015459 is about 1419.6686233062. The cubic root of 2015459 is about 126.3158908412.

The spelling of 2015459 in words is "two million, fifteen thousand, four hundred fifty-nine".