2591004 has 48 divisors (see below), whose sum is σ = 6900768. Its totient is φ = 749568.

The previous prime is 2590997. The next prime is 2591023. The reversal of 2591004 is 4001952.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2164 + ... + 3140.

It is an arithmetic number, because the mean of its divisors is an integer number (143766).

2^2591004 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2591004, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3450384).

2591004 is an abundant number, since it is smaller than the sum of its proper divisors (4309764).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2591004 is a wasteful number, since it uses less digits than its factorization.

2591004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1014 (or 1012 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 2591004 is about 1609.6595913422. The cubic root of 2591004 is about 137.3481121704.

Adding to 2591004 its reverse (4001952), we get a palindrome (6592956).

The spelling of 2591004 in words is "two million, five hundred ninety-one thousand, four".