53565321 has 16 divisors (see below), whose sum is σ = 74954880. Its totient is φ = 33960960.

The previous prime is 53565319. The next prime is 53565329. The reversal of 53565321 is 12356535.

53565321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 53565321 - 2¹ = 53565319 is a prime.

It is a super-2 number, since 2×53565321² = 5738487227666082, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (53565329) 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 15 ways as a sum of consecutive naturals, for example, 10345 + ... + 14633.

It is an arithmetic number, because the mean of its divisors is an integer number (4684680).

Almost surely, 2^53565321 is an apocalyptic number.

It is an amenable number.

53565321 is a deficient number, since it is larger than the sum of its proper divisors (21389559).

53565321 is a wasteful number, since it uses less digits than its factorization.

53565321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4496.

The product of its digits is 13500, while the sum is 30.

The square root of 53565321 is about 7318.8333086633. The cubic root of 53565321 is about 376.9593940135.

It can be divided in two parts, 535 and 65321, that added together give a palindrome (65856).

The spelling of 53565321 in words is "fifty-three million, five hundred sixty-five thousand, three hundred twenty-one".