53644433 has 4 divisors (see below), whose sum is σ = 54175668. Its totient is φ = 53113200.

The previous prime is 53644417. The next prime is 53644453. The reversal of 53644433 is 33444635.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 30824704 + 22819729 = 5552^2 + 4777^2 .

It is a cyclic number.

It is not a de Polignac number, because 53644433 - 2⁴ = 53644417 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 53644433.

It is not an unprimeable number, because it can be changed into a prime (53644453) 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 3 ways as a sum of consecutive naturals, for example, 265466 + ... + 265667.

It is an arithmetic number, because the mean of its divisors is an integer number (13543917).

Almost surely, 2^53644433 is an apocalyptic number.

It is an amenable number.

53644433 is a deficient number, since it is larger than the sum of its proper divisors (531235).

53644433 is a wasteful number, since it uses less digits than its factorization.

53644433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 531234.

The product of its digits is 51840, while the sum is 32.

The square root of 53644433 is about 7324.2360011130. The cubic root of 53644433 is about 377.1448830664.

The spelling of 53644433 in words is "fifty-three million, six hundred forty-four thousand, four hundred thirty-three".