2539191 has 4 divisors (see below), whose sum is σ = 3385592. Its totient is φ = 1692792.

The previous prime is 2539189. The next prime is 2539213. The reversal of 2539191 is 1919352.

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

It is not a de Polignac number, because 2539191 - 2¹ = 2539189 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2539151) 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, 423196 + ... + 423201.

It is an arithmetic number, because the mean of its divisors is an integer number (846398).

2^2539191 is an apocalyptic number.

2539191 is a deficient number, since it is larger than the sum of its proper divisors (846401).

2539191 is an equidigital number, since it uses as much as digits as its factorization.

2539191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 846400.

The product of its digits is 2430, while the sum is 30.

The square root of 2539191 is about 1593.4839189650. The cubic root of 2539191 is about 136.4264117836.

The spelling of 2539191 in words is "two million, five hundred thirty-nine thousand, one hundred ninety-one".