2539045 has 4 divisors (see below), whose sum is σ = 3046860. Its totient is φ = 2031232.

The previous prime is 2538983. The next prime is 2539049. The reversal of 2539045 is 5409352.

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

It can be written as a sum of positive squares in 2 ways, for example, as 516961 + 2022084 = 719^2 + 1422^2 .

It is a cyclic number.

It is not a de Polignac number, because 2539045 - 2⁷ = 2538917 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2539049) 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, 253900 + ... + 253909.

It is an arithmetic number, because the mean of its divisors is an integer number (761715).

2^2539045 is an apocalyptic number.

It is an amenable number.

2539045 is a deficient number, since it is larger than the sum of its proper divisors (507815).

2539045 is an equidigital number, since it uses as much as digits as its factorization.

2539045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 507814.

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 2539045 is about 1593.4381067365. The cubic root of 2539045 is about 136.4237969563.

The spelling of 2539045 in words is "two million, five hundred thirty-nine thousand, forty-five".