424505221 has 4 divisors (see below), whose sum is σ = 485148832. Its totient is φ = 363861612.

The previous prime is 424505189. The next prime is 424505231. The reversal of 424505221 is 122505424.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 424505221 - 2⁵ = 424505189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (424505231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30321795 + ... + 30321808.

It is an arithmetic number, because the mean of its divisors is an integer number (121287208).

Almost surely, 2^424505221 is an apocalyptic number.

It is an amenable number.

424505221 is a deficient number, since it is larger than the sum of its proper divisors (60643611).

424505221 is an equidigital number, since it uses as much as digits as its factorization.

424505221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60643610.

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 424505221 is about 20603.5244800495. The cubic root of 424505221 is about 751.5554214702. Note that the first 3 decimals are identical.

The spelling of 424505221 in words is "four hundred twenty-four million, five hundred five thousand, two hundred twenty-one".