64251149 has 2 divisors, whose sum is σ = 64251150. Its totient is φ = 64251148.

The previous prime is 64251139. The next prime is 64251157. The reversal of 64251149 is 94115246.

64251149 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 56355049 + 7896100 = 7507^2 + 2810^2 .

It is a cyclic number.

It is not a de Polignac number, because 64251149 - 2⁴ = 64251133 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is equal to p_3799013 and since 64251149 and 3799013 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64251139) 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, 32125574 + 32125575.

It is an arithmetic number, because the mean of its divisors is an integer number (32125575).

Almost surely, 2^64251149 is an apocalyptic number.

It is an amenable number.

64251149 is a deficient number, since it is larger than the sum of its proper divisors (1).

64251149 is an equidigital number, since it uses as much as digits as its factorization.

64251149 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8640, while the sum is 32.

The square root of 64251149 is about 8015.6814432711. The cubic root of 64251149 is about 400.5225441551.

The spelling of 64251149 in words is "sixty-four million, two hundred fifty-one thousand, one hundred forty-nine".