2821535 has 4 divisors (see below), whose sum is σ = 3385848. Its totient is φ = 2257224.

The previous prime is 2821517. The next prime is 2821537. The reversal of 2821535 is 5351282.

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 2821535 - 2⁶ = 2821471 is a prime.

It is a super-2 number, since 2×2821535² = 15922119512450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2821537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 282149 + ... + 282158.

It is an arithmetic number, because the mean of its divisors is an integer number (846462).

2^2821535 is an apocalyptic number.

2821535 is a deficient number, since it is larger than the sum of its proper divisors (564313).

2821535 is an equidigital number, since it uses as much as digits as its factorization.

2821535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 564312.

The product of its digits is 2400, while the sum is 26.

The square root of 2821535 is about 1679.7425397959. The cubic root of 2821535 is about 141.3063940635.

The spelling of 2821535 in words is "two million, eight hundred twenty-one thousand, five hundred thirty-five".