64043522 has 16 divisors (see below), whose sum is σ = 104467320. Its totient is φ = 29323008.

The previous prime is 64043521. The next prime is 64043531. The reversal of 64043522 is 22534046.

It can be written as a sum of positive squares in 4 ways, for example, as 62900761 + 1142761 = 7931^2 + 1069^2 .

It is a junction number, because it is equal to n+sod(n) for n = 64043491 and 64043500.

It is not an unprimeable number, because it can be changed into a prime (64043521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24197 + ... + 26712.

Almost surely, 2^64043522 is an apocalyptic number.

64043522 is a deficient number, since it is larger than the sum of its proper divisors (40423798).

64043522 is a wasteful number, since it uses less digits than its factorization.

64043522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50965.

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 64043522 is about 8002.7196627147. The cubic root of 64043522 is about 400.0906502881.

Adding to 64043522 its reverse (22534046), we get a palindrome (86577568).

The spelling of 64043522 in words is "sixty-four million, forty-three thousand, five hundred twenty-two".