422155445 has 4 divisors (see below), whose sum is σ = 506586540. Its totient is φ = 337724352.

The previous prime is 422155439. The next prime is 422155451. The reversal of 422155445 is 544551224.

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

It is an interprime number because it is at equal distance from previous prime (422155439) and next prime (422155451).

It can be written as a sum of positive squares in 2 ways, for example, as 220997956 + 201157489 = 14866^2 + 14183^2 .

It is a cyclic number.

It is not a de Polignac number, because 422155445 - 2¹⁶ = 422089909 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42215540 + ... + 42215549.

It is an arithmetic number, because the mean of its divisors is an integer number (126646635).

Almost surely, 2^422155445 is an apocalyptic number.

It is an amenable number.

422155445 is a deficient number, since it is larger than the sum of its proper divisors (84431095).

422155445 is an equidigital number, since it uses as much as digits as its factorization.

422155445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84431094.

The product of its digits is 32000, while the sum is 32.

The square root of 422155445 is about 20546.4217079276. The cubic root of 422155445 is about 750.1661528179.

The spelling of 422155445 in words is "four hundred twenty-two million, one hundred fifty-five thousand, four hundred forty-five".