53530443 has 8 divisors (see below), whose sum is σ = 79304400. Its totient is φ = 35686944.

The previous prime is 53530427. The next prime is 53530457. The reversal of 53530443 is 34403535.

It is a happy number.

It is not a de Polignac number, because 53530443 - 2⁴ = 53530427 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 1982609 = 53530443 / (5 + 3 + 5 + 3 + 0 + 4 + 4 + 3).

It is not an unprimeable number, because it can be changed into a prime (53530423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 991278 + ... + 991331.

It is an arithmetic number, because the mean of its divisors is an integer number (9913050).

Almost surely, 2^53530443 is an apocalyptic number.

53530443 is a deficient number, since it is larger than the sum of its proper divisors (25773957).

53530443 is a wasteful number, since it uses less digits than its factorization.

53530443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1982618 (or 1982612 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 27.

The square root of 53530443 is about 7316.4501638431. The cubic root of 53530443 is about 376.8775596965.

Adding to 53530443 its reverse (34403535), we get a palindrome (87933978).

The spelling of 53530443 in words is "fifty-three million, five hundred thirty thousand, four hundred forty-three".