2821249 has 4 divisors (see below), whose sum is σ = 2943936. Its totient is φ = 2698564.

The previous prime is 2821229. The next prime is 2821267. The reversal of 2821249 is 9421282.

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 not a de Polignac number, because 2821249 - 2⁹ = 2820737 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2821229) 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, 61309 + ... + 61354.

It is an arithmetic number, because the mean of its divisors is an integer number (735984).

2^2821249 is an apocalyptic number.

It is an amenable number.

2821249 is a deficient number, since it is larger than the sum of its proper divisors (122687).

2821249 is a wasteful number, since it uses less digits than its factorization.

2821249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122686.

The product of its digits is 2304, while the sum is 28.

The square root of 2821249 is about 1679.6574055444. The cubic root of 2821249 is about 141.3016194763.

The spelling of 2821249 in words is "two million, eight hundred twenty-one thousand, two hundred forty-nine".