55554243 has 4 divisors (see below), whose sum is σ = 74072328. Its totient is φ = 37036160.

The previous prime is 55554217. The next prime is 55554251. The reversal of 55554243 is 34245555.

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 55554243 - 2⁵ = 55554211 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55554643) 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, 9259038 + ... + 9259043.

It is an arithmetic number, because the mean of its divisors is an integer number (18518082).

Almost surely, 2^55554243 is an apocalyptic number.

55554243 is a deficient number, since it is larger than the sum of its proper divisors (18518085).

55554243 is a wasteful number, since it uses less digits than its factorization.

55554243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18518084.

The product of its digits is 60000, while the sum is 33.

The square root of 55554243 is about 7453.4718755758. The cubic root of 55554243 is about 381.5684091587.

Adding to 55554243 its reverse (34245555), we get a palindrome (89799798).

The spelling of 55554243 in words is "fifty-five million, five hundred fifty-four thousand, two hundred forty-three".