55303543 has 4 divisors (see below), whose sum is σ = 55362528. Its totient is φ = 55244560.

The previous prime is 55303531. The next prime is 55303579. The reversal of 55303543 is 34530355.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34530355 = 5 ⋅6906071.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55303543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55303043) 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, 28063 + ... + 29968.

It is an arithmetic number, because the mean of its divisors is an integer number (13840632).

Almost surely, 2^55303543 is an apocalyptic number.

55303543 is a deficient number, since it is larger than the sum of its proper divisors (58985).

55303543 is an equidigital number, since it uses as much as digits as its factorization.

55303543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58984.

The product of its (nonzero) digits is 13500, while the sum is 28.

The square root of 55303543 is about 7436.6351934191. The cubic root of 55303543 is about 380.9935748418.

Adding to 55303543 its reverse (34530355), we get a palindrome (89833898).

The spelling of 55303543 in words is "fifty-five million, three hundred three thousand, five hundred forty-three".