2078539 has 4 divisors (see below), whose sum is σ = 2200824. Its totient is φ = 1956256.

The previous prime is 2078537. The next prime is 2078551. The reversal of 2078539 is 9358702.

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 2078539 - 2¹ = 2078537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2078537) 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, 61117 + ... + 61150.

It is an arithmetic number, because the mean of its divisors is an integer number (550206).

2^2078539 is an apocalyptic number.

2078539 is a deficient number, since it is larger than the sum of its proper divisors (122285).

2078539 is a wasteful number, since it uses less digits than its factorization.

2078539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122284.

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 2078539 is about 1441.7139105939. The cubic root of 2078539 is about 127.6201916730.

The spelling of 2078539 in words is "two million, seventy-eight thousand, five hundred thirty-nine".