2015243 has 4 divisors (see below), whose sum is σ = 2022648. Its totient is φ = 2007840.

The previous prime is 2015213. The next prime is 2015267. The reversal of 2015243 is 3425102.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3425102 = 2 ⋅1712551.

It is a cyclic number.

It is not a de Polignac number, because 2015243 - 2⁶ = 2015179 is a prime.

It is a super-2 number, since 2×2015243² = 8122408698098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2015203) 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, 3278 + ... + 3843.

It is an arithmetic number, because the mean of its divisors is an integer number (505662).

2^2015243 is an apocalyptic number.

2015243 is a deficient number, since it is larger than the sum of its proper divisors (7405).

2015243 is an equidigital number, since it uses as much as digits as its factorization.

2015243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7404.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 2015243 is about 1419.5925471768. The cubic root of 2015243 is about 126.3113781872.

The spelling of 2015243 in words is "two million, fifteen thousand, two hundred forty-three".