2002281 has 4 divisors (see below), whose sum is σ = 2669712. Its totient is φ = 1334852.

The previous prime is 2002267. The next prime is 2002289. The reversal of 2002281 is 1822002.

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 2002281 - 2⁵ = 2002249 is a prime.

It is a super-2 number, since 2×2002281² = 8018258405922, which contains 22 as substring.

It is a D-number.

2002281 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 2002281.

It is not an unprimeable number, because it can be changed into a prime (2002289) 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, 333711 + ... + 333716.

It is an arithmetic number, because the mean of its divisors is an integer number (667428).

2^2002281 is an apocalyptic number.

It is an amenable number.

2002281 is a deficient number, since it is larger than the sum of its proper divisors (667431).

2002281 is an equidigital number, since it uses as much as digits as its factorization.

2002281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 667430.

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 2002281 is about 1415.0197878475. The cubic root of 2002281 is about 126.0399847904.

Adding to 2002281 its reverse (1822002), we get a palindrome (3824283).

The spelling of 2002281 in words is "two million, two thousand, two hundred eighty-one".