244505221 has 2 divisors, whose sum is σ = 244505222. Its totient is φ = 244505220.

The previous prime is 244505197. The next prime is 244505257. The reversal of 244505221 is 122505442.

244505221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 176624100 + 67881121 = 13290^2 + 8239^2 .

It is a cyclic number.

It is not a de Polignac number, because 244505221 - 2⁵ = 244505189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (244505291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122252610 + 122252611.

It is an arithmetic number, because the mean of its divisors is an integer number (122252611).

Almost surely, 2^244505221 is an apocalyptic number.

It is an amenable number.

244505221 is a deficient number, since it is larger than the sum of its proper divisors (1).

244505221 is an equidigital number, since it uses as much as digits as its factorization.

244505221 is an evil number, because the sum of its binary digits is even.

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

The square root of 244505221 is about 15636.6627193912. The cubic root of 244505221 is about 625.3109671734.

The spelling of 244505221 in words is "two hundred forty-four million, five hundred five thousand, two hundred twenty-one".