53444163 has 4 divisors (see below), whose sum is σ = 71258888. Its totient is φ = 35629440.

The previous prime is 53444161. The next prime is 53444173. The reversal of 53444163 is 36144435.

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

It is not a de Polignac number, because 53444163 - 2¹ = 53444161 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 53444163.

It is not an unprimeable number, because it can be changed into a prime (53444161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8907358 + ... + 8907363.

It is an arithmetic number, because the mean of its divisors is an integer number (17814722).

Almost surely, 2^53444163 is an apocalyptic number.

53444163 is a deficient number, since it is larger than the sum of its proper divisors (17814725).

53444163 is a wasteful number, since it uses less digits than its factorization.

53444163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17814724.

The product of its digits is 17280, while the sum is 30.

The square root of 53444163 is about 7310.5514839853. The cubic root of 53444163 is about 376.6749679256.

Adding to 53444163 its reverse (36144435), we get a palindrome (89588598).

The spelling of 53444163 in words is "fifty-three million, four hundred forty-four thousand, one hundred sixty-three".