2506039 has 4 divisors (see below), whose sum is σ = 2512440. Its totient is φ = 2499640.

The previous prime is 2506033. The next prime is 2506069. The reversal of 2506039 is 9306052.

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 2506039 - 2⁹ = 2505527 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 (2506033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2572 + ... + 3409.

It is an arithmetic number, because the mean of its divisors is an integer number (628110).

2^2506039 is an apocalyptic number.

2506039 is a deficient number, since it is larger than the sum of its proper divisors (6401).

2506039 is an equidigital number, since it uses as much as digits as its factorization.

2506039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6400.

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

The square root of 2506039 is about 1583.0473776865. The cubic root of 2506039 is about 135.8300754067.

The spelling of 2506039 in words is "two million, five hundred six thousand, thirty-nine".