422320554 has 20 divisors (see below), whose sum is σ = 946311234. Its totient is φ = 140773464.

The previous prime is 422320537. The next prime is 422320621. The reversal of 422320554 is 455023224.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 348755625 + 73564929 = 18675^2 + 8577^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

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 in 9 ways as a sum of consecutive naturals, for example, 1303297 + ... + 1303620.

Almost surely, 2^422320554 is an apocalyptic number.

422320554 is an abundant number, since it is smaller than the sum of its proper divisors (523990680).

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

422320554 is a wasteful number, since it uses less digits than its factorization.

422320554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2606931 (or 2606922 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 27.

The square root of 422320554 is about 20550.4392653782. The cubic root of 422320554 is about 750.2639391040.

Adding to 422320554 its reverse (455023224), we get a palindrome (877343778).

The spelling of 422320554 in words is "four hundred twenty-two million, three hundred twenty thousand, five hundred fifty-four".