472559221 has 2 divisors, whose sum is σ = 472559222. Its totient is φ = 472559220.

The previous prime is 472559201. The next prime is 472559233. The reversal of 472559221 is 122955274.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 472410225 + 148996 = 21735^2 + 386^2 .

It is a cyclic number.

It is not a de Polignac number, because 472559221 - 2¹⁷ = 472428149 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (472559201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 236279610 + 236279611.

It is an arithmetic number, because the mean of its divisors is an integer number (236279611).

Almost surely, 2^472559221 is an apocalyptic number.

It is an amenable number.

472559221 is a deficient number, since it is larger than the sum of its proper divisors (1).

472559221 is an equidigital number, since it uses as much as digits as its factorization.

472559221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 50400, while the sum is 37.

The square root of 472559221 is about 21738.4272890198. The cubic root of 472559221 is about 778.9066540975.

The spelling of 472559221 in words is "four hundred seventy-two million, five hundred fifty-nine thousand, two hundred twenty-one".