2582921 has 4 divisors (see below), whose sum is σ = 2817744. Its totient is φ = 2348100.

The previous prime is 2582911. The next prime is 2582939. The reversal of 2582921 is 1292852.

2582921 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2582921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2582911) 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, 117395 + ... + 117416.

It is an arithmetic number, because the mean of its divisors is an integer number (704436).

2^2582921 is an apocalyptic number.

It is an amenable number.

2582921 is a deficient number, since it is larger than the sum of its proper divisors (234823).

2582921 is a wasteful number, since it uses less digits than its factorization.

2582921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234822.

The product of its digits is 2880, while the sum is 29.

The square root of 2582921 is about 1607.1468507887. The cubic root of 2582921 is about 137.2051378312.

The spelling of 2582921 in words is "two million, five hundred eighty-two thousand, nine hundred twenty-one".