55516443 has 16 divisors (see below), whose sum is σ = 76609536. Its totient is φ = 35723520.

The previous prime is 55516429. The next prime is 55516453. The reversal of 55516443 is 34461555.

It is not a de Polignac number, because 55516443 - 2⁸ = 55516187 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55516403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62146 + ... + 63032.

It is an arithmetic number, because the mean of its divisors is an integer number (4788096).

Almost surely, 2^55516443 is an apocalyptic number.

55516443 is a deficient number, since it is larger than the sum of its proper divisors (21093093).

55516443 is a wasteful number, since it uses less digits than its factorization.

55516443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1594.

The product of its digits is 36000, while the sum is 33.

The square root of 55516443 is about 7450.9357130497. The cubic root of 55516443 is about 381.4818477633.

Adding to 55516443 its reverse (34461555), we get a palindrome (89977998).

The spelling of 55516443 in words is "fifty-five million, five hundred sixteen thousand, four hundred forty-three".