423522550 has 24 divisors (see below), whose sum is σ = 859366872. Its totient is φ = 154008000.

The previous prime is 423522509. The next prime is 423522563. The reversal of 423522550 is 55225324.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

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 11 ways as a sum of consecutive naturals, for example, 384471 + ... + 385570.

It is an arithmetic number, because the mean of its divisors is an integer number (35806953).

Almost surely, 2^423522550 is an apocalyptic number.

423522550 is an abundant number, since it is smaller than the sum of its proper divisors (435844322).

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

423522550 is a wasteful number, since it uses less digits than its factorization.

423522550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 770064 (or 770059 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 28.

The square root of 423522550 is about 20579.6635055095. The cubic root of 423522550 is about 750.9750577265.

Adding to 423522550 its reverse (55225324), we get a palindrome (478747874).

The spelling of 423522550 in words is "four hundred twenty-three million, five hundred twenty-two thousand, five hundred fifty".