2501539 has 4 divisors (see below), whose sum is σ = 2505256. Its totient is φ = 2497824.

The previous prime is 2501507. The next prime is 2501563. The reversal of 2501539 is 9351052.

2501539 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 2501539 - 2⁵ = 2501507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2501599) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 534 + ... + 2299.

It is an arithmetic number, because the mean of its divisors is an integer number (626314).

2^2501539 is an apocalyptic number.

2501539 is a deficient number, since it is larger than the sum of its proper divisors (3717).

2501539 is an equidigital number, since it uses as much as digits as its factorization.

2501539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3716.

The product of its (nonzero) digits is 1350, while the sum is 25.

The square root of 2501539 is about 1581.6254297399. The cubic root of 2501539 is about 135.7487250416.

The spelling of 2501539 in words is "two million, five hundred one thousand, five hundred thirty-nine".