53289321 has 16 divisors (see below), whose sum is σ = 75254784. Its totient is φ = 33471504.

The previous prime is 53289311. The next prime is 53289347. The reversal of 53289321 is 12398235.

It is not a de Polignac number, because 53289321 - 2⁵ = 53289289 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (53289311) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1141 + ... + 10386.

It is an arithmetic number, because the mean of its divisors is an integer number (4703424).

Almost surely, 2^53289321 is an apocalyptic number.

It is an amenable number.

53289321 is a deficient number, since it is larger than the sum of its proper divisors (21965463).

53289321 is a wasteful number, since it uses less digits than its factorization.

53289321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11620.

The product of its digits is 12960, while the sum is 33.

The square root of 53289321 is about 7299.9534930025. The cubic root of 53289321 is about 376.3108400786.

The spelling of 53289321 in words is "fifty-three million, two hundred eighty-nine thousand, three hundred twenty-one".