64254221 has 2 divisors, whose sum is σ = 64254222. Its totient is φ = 64254220.

The previous prime is 64254199. The next prime is 64254251. The reversal of 64254221 is 12245246.

64254221 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., 63282025 + 972196 = 7955^2 + 986^2 .

It is a cyclic number.

It is not a de Polignac number, because 64254221 - 2¹⁸ = 63992077 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 (64254251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32127110 + 32127111.

It is an arithmetic number, because the mean of its divisors is an integer number (32127111).

Almost surely, 2^64254221 is an apocalyptic number.

It is an amenable number.

64254221 is a deficient number, since it is larger than the sum of its proper divisors (1).

64254221 is an equidigital number, since it uses as much as digits as its factorization.

64254221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3840, while the sum is 26.

The square root of 64254221 is about 8015.8730653623. The cubic root of 64254221 is about 400.5289273647.

Adding to 64254221 its reverse (12245246), we get a palindrome (76499467).

The spelling of 64254221 in words is "sixty-four million, two hundred fifty-four thousand, two hundred twenty-one".