451320222 has 16 divisors (see below), whose sum is σ = 911077632. Its totient is φ = 149033880.

The previous prime is 451320197. The next prime is 451320223. The reversal of 451320222 is 222023154.

It is a super-2 number, since 2×451320222² = 407379885572258568, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (451320223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 350854 + ... + 352137.

It is an arithmetic number, because the mean of its divisors is an integer number (56942352).

Almost surely, 2^451320222 is an apocalyptic number.

451320222 is an abundant number, since it is smaller than the sum of its proper divisors (459757410).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

451320222 is a wasteful number, since it uses less digits than its factorization.

451320222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 703103.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 451320222 is about 21244.2985763240. The cubic root of 451320222 is about 767.0581070589.

Adding to 451320222 its reverse (222023154), we get a palindrome (673343376).

The spelling of 451320222 in words is "four hundred fifty-one million, three hundred twenty thousand, two hundred twenty-two".