55643443 has 8 divisors (see below), whose sum is σ = 56154560. Its totient is φ = 55135080.

The previous prime is 55643387. The next prime is 55643453. The reversal of 55643443 is 34434655.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55643443 - 2¹⁷ = 55512371 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55643399 and 55643408.

It is not an unprimeable number, because it can be changed into a prime (55643453) 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, 64348 + ... + 65206.

It is an arithmetic number, because the mean of its divisors is an integer number (7019320).

Almost surely, 2^55643443 is an apocalyptic number.

55643443 is a deficient number, since it is larger than the sum of its proper divisors (511117).

55643443 is a wasteful number, since it uses less digits than its factorization.

55643443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1377.

The product of its digits is 86400, while the sum is 34.

The square root of 55643443 is about 7459.4532641474. The cubic root of 55643443 is about 381.7725201923.

The spelling of 55643443 in words is "fifty-five million, six hundred forty-three thousand, four hundred forty-three".