52321664 has 16 divisors (see below), whose sum is σ = 104234820. Its totient is φ = 26160768.

The previous prime is 52321657. The next prime is 52321679. The reversal of 52321664 is 46612325.

It is a tau number, because it is divible by the number of its divisors (16).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 204254 + ... + 204509.

Almost surely, 2^52321664 is an apocalyptic number.

It is an amenable number.

52321664 is a deficient number, since it is larger than the sum of its proper divisors (51913156).

52321664 is an equidigital number, since it uses as much as digits as its factorization.

52321664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408777 (or 408765 counting only the distinct ones).

The product of its digits is 8640, while the sum is 29.

The square root of 52321664 is about 7233.3715513583. The cubic root of 52321664 is about 374.0191588458.

Adding to 52321664 its reverse (46612325), we get a palindrome (98933989).

The spelling of 52321664 in words is "fifty-two million, three hundred twenty-one thousand, six hundred sixty-four".