2321539 has 4 divisors (see below), whose sum is σ = 2532600. Its totient is φ = 2110480.

The previous prime is 2321531. The next prime is 2321563. The reversal of 2321539 is 9351232.

It is a happy number.

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 2321539 - 2³ = 2321531 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2321531) 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, 105514 + ... + 105535.

It is an arithmetic number, because the mean of its divisors is an integer number (633150).

2^2321539 is an apocalyptic number.

2321539 is a deficient number, since it is larger than the sum of its proper divisors (211061).

2321539 is a wasteful number, since it uses less digits than its factorization.

2321539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211060.

The product of its digits is 1620, while the sum is 25.

The square root of 2321539 is about 1523.6597389181. The cubic root of 2321539 is about 132.4113849156.

It can be divided in two parts, 232 and 1539, that added together give a palindrome (1771).

The spelling of 2321539 in words is "two million, three hundred twenty-one thousand, five hundred thirty-nine".