451224002 has 4 divisors (see below), whose sum is σ = 676836006. Its totient is φ = 225612000.

The previous prime is 451223987. The next prime is 451224019. The reversal of 451224002 is 200422154.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 451095121 + 128881 = 21239^2 + 359^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 112805999 + ... + 112806002.

Almost surely, 2^451224002 is an apocalyptic number.

451224002 is a deficient number, since it is larger than the sum of its proper divisors (225612004).

451224002 is a wasteful number, since it uses less digits than its factorization.

451224002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225612003.

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 451224002 is about 21242.0338480099. The cubic root of 451224002 is about 767.0035917553.

Adding to 451224002 its reverse (200422154), we get a palindrome (651646156).

The spelling of 451224002 in words is "four hundred fifty-one million, two hundred twenty-four thousand, two".