64229251 has 2 divisors, whose sum is σ = 64229252. Its totient is φ = 64229250.

The previous prime is 64229239. The next prime is 64229309. The reversal of 64229251 is 15292246.

64229251 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 is a cyclic number.

It is not a de Polignac number, because 64229251 - 2⁵ = 64229219 is a prime.

It is not a weakly prime, because it can be changed into another prime (64229051) 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, 32114625 + 32114626.

It is an arithmetic number, because the mean of its divisors is an integer number (32114626).

Almost surely, 2^64229251 is an apocalyptic number.

64229251 is a deficient number, since it is larger than the sum of its proper divisors (1).

64229251 is an equidigital number, since it uses as much as digits as its factorization.

64229251 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8640, while the sum is 31.

The square root of 64229251 is about 8014.3153793696. The cubic root of 64229251 is about 400.4770371128.

The spelling of 64229251 in words is "sixty-four million, two hundred twenty-nine thousand, two hundred fifty-one".