2539817 has 12 divisors (see below), whose sum is σ = 3129300. Its totient is φ = 2048256.

The previous prime is 2539777. The next prime is 2539829. The reversal of 2539817 is 7189352.

It can be written as a sum of positive squares in 2 ways, for example, as 1073296 + 1466521 = 1036^2 + 1211^2 .

It is not a de Polignac number, because 2539817 - 2⁶ = 2539753 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2538817) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 692 + ... + 2357.

It is an arithmetic number, because the mean of its divisors is an integer number (260775).

2^2539817 is an apocalyptic number.

It is an amenable number.

2539817 is a deficient number, since it is larger than the sum of its proper divisors (589483).

2539817 is a wasteful number, since it uses less digits than its factorization.

2539817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3080 (or 3073 counting only the distinct ones).

The product of its digits is 15120, while the sum is 35.

The square root of 2539817 is about 1593.6803318106. The cubic root of 2539817 is about 136.4376221673.

The spelling of 2539817 in words is "two million, five hundred thirty-nine thousand, eight hundred seventeen".