2504391 has 4 divisors (see below), whose sum is σ = 3339192. Its totient is φ = 1669592.

The previous prime is 2504377. The next prime is 2504399. The reversal of 2504391 is 1934052.

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 2504391 - 2¹¹ = 2502343 is a prime.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2504399) 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, 417396 + ... + 417401.

It is an arithmetic number, because the mean of its divisors is an integer number (834798).

2^2504391 is an apocalyptic number.

2504391 is a deficient number, since it is larger than the sum of its proper divisors (834801).

2504391 is an equidigital number, since it uses as much as digits as its factorization.

2504391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 834800.

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 2504391 is about 1582.5267770246. The cubic root of 2504391 is about 135.8002944056.

The spelling of 2504391 in words is "two million, five hundred four thousand, three hundred ninety-one".