1053443 has 4 divisors (see below), whose sum is σ = 1057800. Its totient is φ = 1049088.

The previous prime is 1053421. The next prime is 1053449. The reversal of 1053443 is 3443501.

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

It is a cyclic number.

It is not a de Polignac number, because 1053443 - 2¹⁴ = 1037059 is a prime.

It is a super-2 number, since 2×1053443² = 2219484308498, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1053449) 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, 1793 + ... + 2306.

It is an arithmetic number, because the mean of its divisors is an integer number (264450).

2^1053443 is an apocalyptic number.

1053443 is a deficient number, since it is larger than the sum of its proper divisors (4357).

1053443 is an equidigital number, since it uses as much as digits as its factorization.

1053443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4356.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 1053443 is about 1026.3737136151. The cubic root of 1053443 is about 101.7506082101.

Adding to 1053443 its reverse (3443501), we get a palindrome (4496944).

The spelling of 1053443 in words is "one million, fifty-three thousand, four hundred forty-three".