2002251 has 4 divisors (see below), whose sum is σ = 2669672. Its totient is φ = 1334832.

The previous prime is 2002249. The next prime is 2002267. The reversal of 2002251 is 1522002.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2002251 - 2¹ = 2002249 is a prime.

It is an Ulam number.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2002211) 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, 333706 + ... + 333711.

It is an arithmetic number, because the mean of its divisors is an integer number (667418).

2^2002251 is an apocalyptic number.

2002251 is a deficient number, since it is larger than the sum of its proper divisors (667421).

2002251 is an equidigital number, since it uses as much as digits as its factorization.

2002251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 667420.

The product of its (nonzero) digits is 40, while the sum is 12.

The square root of 2002251 is about 1415.0091872493. The cubic root of 2002251 is about 126.0393553052.

Adding to 2002251 its reverse (1522002), we get a palindrome (3524253).

Subtracting from 2002251 its reverse (1522002), we obtain a square (480249 = 693²).

The spelling of 2002251 in words is "two million, two thousand, two hundred fifty-one".