424552221 has 24 divisors (see below), whose sum is σ = 623278656. Its totient is φ = 278432640.

The previous prime is 424552217. The next prime is 424552277. The reversal of 424552221 is 122255424.

It is not a de Polignac number, because 424552221 - 2² = 424552217 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (424552211) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 195381 + ... + 197541.

It is an arithmetic number, because the mean of its divisors is an integer number (25969944).

Almost surely, 2^424552221 is an apocalyptic number.

It is an amenable number.

424552221 is a deficient number, since it is larger than the sum of its proper divisors (198726435).

424552221 is a wasteful number, since it uses less digits than its factorization.

424552221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2513 (or 2510 counting only the distinct ones).

The product of its digits is 6400, while the sum is 27.

The square root of 424552221 is about 20604.6650300363. The cubic root of 424552221 is about 751.5831571332.

The spelling of 424552221 in words is "four hundred twenty-four million, five hundred fifty-two thousand, two hundred twenty-one".