2002451 has 4 divisors (see below), whose sum is σ = 2184504. Its totient is φ = 1820400.

The previous prime is 2002417. The next prime is 2002453. The reversal of 2002451 is 1542002.

Added to its reverse (1542002) it gives a triangular number (3544453 = T₂₆₆₂).

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 2002451 - 2⁶ = 2002387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2002453) 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, 91010 + ... + 91031.

It is an arithmetic number, because the mean of its divisors is an integer number (546126).

2^2002451 is an apocalyptic number.

2002451 is a deficient number, since it is larger than the sum of its proper divisors (182053).

2002451 is a wasteful number, since it uses less digits than its factorization.

2002451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182052.

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 2002451 is about 1415.0798564039. The cubic root of 2002451 is about 126.0435517541.

Adding to 2002451 its reverse (1542002), we get a palindrome (3544453).

The spelling of 2002451 in words is "two million, two thousand, four hundred fifty-one".