64554449 has 4 divisors (see below), whose sum is σ = 64696164. Its totient is φ = 64412736.

The previous prime is 64554443. The next prime is 64554461. The reversal of 64554449 is 94445546.

64554449 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 30250000 + 34304449 = 5500^2 + 5857^2 .

It is a cyclic number.

It is not a de Polignac number, because 64554449 - 2¹⁶ = 64488913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64554443) 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 in 3 ways as a sum of consecutive naturals, for example, 70172 + ... + 71085.

It is an arithmetic number, because the mean of its divisors is an integer number (16174041).

Almost surely, 2^64554449 is an apocalyptic number.

It is an amenable number.

64554449 is a deficient number, since it is larger than the sum of its proper divisors (141715).

64554449 is a wasteful number, since it uses less digits than its factorization.

64554449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141714.

The product of its digits is 345600, while the sum is 41.

The square root of 64554449 is about 8034.5783336775. The cubic root of 64554449 is about 401.1517823934.

The spelling of 64554449 in words is "sixty-four million, five hundred fifty-four thousand, four hundred forty-nine".