53664566 has 16 divisors (see below), whose sum is σ = 84789504. Its totient is φ = 25423464.

The previous prime is 53664557. The next prime is 53664593. The reversal of 53664566 is 66546635.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 530 + ... + 10373.

It is an arithmetic number, because the mean of its divisors is an integer number (5299344).

Almost surely, 2^53664566 is an apocalyptic number.

53664566 is a deficient number, since it is larger than the sum of its proper divisors (31124938).

53664566 is a wasteful number, since it uses less digits than its factorization.

53664566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11035.

The product of its digits is 388800, while the sum is 41.

The square root of 53664566 is about 7325.6102817444. The cubic root of 53664566 is about 377.1920585625.

The spelling of 53664566 in words is "fifty-three million, six hundred sixty-four thousand, five hundred sixty-six".