2583991 has 4 divisors (see below), whose sum is σ = 2599632. Its totient is φ = 2568352.

The previous prime is 2583979. The next prime is 2584007. The reversal of 2583991 is 1993852.

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 2583991 - 2⁷ = 2583863 is a prime.

It is a Duffinian number.

It is a plaindrome in base 8.

It is a self number, because there is not a number n which added to its sum of digits gives 2583991.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2583391) 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, 7570 + ... + 7903.

It is an arithmetic number, because the mean of its divisors is an integer number (649908).

2^2583991 is an apocalyptic number.

2583991 is a deficient number, since it is larger than the sum of its proper divisors (15641).

2583991 is a wasteful number, since it uses less digits than its factorization.

2583991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15640.

The product of its digits is 19440, while the sum is 37.

The square root of 2583991 is about 1607.4797043820. The cubic root of 2583991 is about 137.2240814006.

The spelling of 2583991 in words is "two million, five hundred eighty-three thousand, nine hundred ninety-one".