424546221 has 16 divisors (see below), whose sum is σ = 617886720. Its totient is φ = 257148720.

The previous prime is 424546207. The next prime is 424546247. The reversal of 424546221 is 122645424.

It is not a de Polignac number, because 424546221 - 2⁵ = 424546189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (424546201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 81390 + ... + 86448.

It is an arithmetic number, because the mean of its divisors is an integer number (38617920).

Almost surely, 2^424546221 is an apocalyptic number.

It is an amenable number.

424546221 is a deficient number, since it is larger than the sum of its proper divisors (193340499).

424546221 is a wasteful number, since it uses less digits than its factorization.

424546221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7616.

The product of its digits is 15360, while the sum is 30.

The square root of 424546221 is about 20604.5194314257. The cubic root of 424546221 is about 751.5796165243.

It can be divided in two parts, 4245 and 46221, that multiplied together give a triangular number (196208145 = T₁₉₈₀₉).

The spelling of 424546221 in words is "four hundred twenty-four million, five hundred forty-six thousand, two hundred twenty-one".