422520055 has 4 divisors (see below), whose sum is σ = 507024072. Its totient is φ = 338016040.

The previous prime is 422520037. The next prime is 422520071. The reversal of 422520055 is 550025224.

It is a happy number.

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

It is not a de Polignac number, because 422520055 - 2¹¹ = 422518007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 42252001 + ... + 42252010.

It is an arithmetic number, because the mean of its divisors is an integer number (126756018).

Almost surely, 2^422520055 is an apocalyptic number.

422520055 is a deficient number, since it is larger than the sum of its proper divisors (84504017).

422520055 is an equidigital number, since it uses as much as digits as its factorization.

422520055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84504016.

The product of its (nonzero) digits is 4000, while the sum is 25.

The square root of 422520055 is about 20555.2926274476. The cubic root of 422520055 is about 750.3820601552.

Adding to 422520055 its reverse (550025224), we get a palindrome (972545279).

The spelling of 422520055 in words is "four hundred twenty-two million, five hundred twenty thousand, fifty-five".