53443273 has 4 divisors (see below), whose sum is σ = 57554308. Its totient is φ = 49332240.

The previous prime is 53443267. The next prime is 53443297. The reversal of 53443273 is 37234435.

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 11102224 + 42341049 = 3332^2 + 6507^2 .

It is a cyclic number.

It is not a de Polignac number, because 53443273 - 2¹⁷ = 53312201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53443073) 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, 2055498 + ... + 2055523.

It is an arithmetic number, because the mean of its divisors is an integer number (14388577).

Almost surely, 2^53443273 is an apocalyptic number.

It is an amenable number.

53443273 is a deficient number, since it is larger than the sum of its proper divisors (4111035).

53443273 is a wasteful number, since it uses less digits than its factorization.

53443273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4111034.

The product of its digits is 30240, while the sum is 31.

The square root of 53443273 is about 7310.4906128112. The cubic root of 53443273 is about 376.6728770045.

The spelling of 53443273 in words is "fifty-three million, four hundred forty-three thousand, two hundred seventy-three".