55553012243 has 4 divisors (see below), whose sum is σ = 57345044928. Its totient is φ = 53760979560.

The previous prime is 55553012227. The next prime is 55553012293. The reversal of 55553012243 is 34221035555.

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 55553012243 - 2⁴ = 55553012227 is a prime.

It is a super-2 number, since 2×55553012243² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55553012293) 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, 896016296 + ... + 896016357.

It is an arithmetic number, because the mean of its divisors is an integer number (14336261232).

Almost surely, 2^55553012243 is an apocalyptic number.

55553012243 is a deficient number, since it is larger than the sum of its proper divisors (1792032685).

55553012243 is a wasteful number, since it uses less digits than its factorization.

55553012243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1792032684.

The product of its (nonzero) digits is 90000, while the sum is 35.

Adding to 55553012243 its reverse (34221035555), we get a palindrome (89774047798).

The spelling of 55553012243 in words is "fifty-five billion, five hundred fifty-three million, twelve thousand, two hundred forty-three".