422213545 has 12 divisors (see below), whose sum is σ = 548628876. Its totient is φ = 311787840.

The previous prime is 422213543. The next prime is 422213567. The reversal of 422213545 is 545312224.

It can be written as a sum of positive squares in 6 ways, for example, as 5890329 + 416323216 = 2427^2 + 20404^2 .

It is not a de Polignac number, because 422213545 - 2¹ = 422213543 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (422213543) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 248986 + ... + 250675.

It is an arithmetic number, because the mean of its divisors is an integer number (45719073).

Almost surely, 2^422213545 is an apocalyptic number.

It is an amenable number.

422213545 is a deficient number, since it is larger than the sum of its proper divisors (126415331).

422213545 is a wasteful number, since it uses less digits than its factorization.

422213545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 499692 (or 499679 counting only the distinct ones).

The product of its digits is 9600, while the sum is 28.

The square root of 422213545 is about 20547.8355307804. The cubic root of 422213545 is about 750.2005656191.

Adding to 422213545 its reverse (545312224), we get a palindrome (967525769).

The spelling of 422213545 in words is "four hundred twenty-two million, two hundred thirteen thousand, five hundred forty-five".