55143242513 has 4 divisors (see below), whose sum is σ = 56316503040. Its totient is φ = 53969981988.

The previous prime is 55143242491. The next prime is 55143242521. The reversal of 55143242513 is 31524234155.

55143242513 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 55143242513 - 2⁶ = 55143242449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55143242213) 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, 586630193 + ... + 586630286.

It is an arithmetic number, because the mean of its divisors is an integer number (14079125760).

Almost surely, 2^55143242513 is an apocalyptic number.

It is an amenable number.

55143242513 is a deficient number, since it is larger than the sum of its proper divisors (1173260527).

55143242513 is a wasteful number, since it uses less digits than its factorization.

55143242513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1173260526.

The product of its digits is 72000, while the sum is 35.

Adding to 55143242513 its reverse (31524234155), we get a palindrome (86667476668).

The spelling of 55143242513 in words is "fifty-five billion, one hundred forty-three million, two hundred forty-two thousand, five hundred thirteen".