55211443 has 12 divisors (see below), whose sum is σ = 63915280. Its totient is φ = 46715616.

The previous prime is 55211423. The next prime is 55211467. The reversal of 55211443 is 34411255.

It is a happy number.

It is not a de Polignac number, because 55211443 - 2²⁵ = 21657011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55211423) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 205113 + ... + 205381.

Almost surely, 2^55211443 is an apocalyptic number.

55211443 is a deficient number, since it is larger than the sum of its proper divisors (8703837).

55211443 is an equidigital number, since it uses as much as digits as its factorization.

55211443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 654 (or 385 counting only the distinct ones).

The product of its digits is 2400, while the sum is 25.

The square root of 55211443 is about 7430.4402965100. The cubic root of 55211443 is about 380.7819608824.

Adding to 55211443 its reverse (34411255), we get a palindrome (89622698).

The spelling of 55211443 in words is "fifty-five million, two hundred eleven thousand, four hundred forty-three".