54244242809 has 4 divisors (see below), whose sum is σ = 54245745060. Its totient is φ = 54242740560.

The previous prime is 54244242803. The next prime is 54244242839. The reversal of 54244242809 is 90824244245.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5867560000 + 48376682809 = 76600^2 + 219947^2 .

It is a cyclic number.

It is not a de Polignac number, because 54244242809 - 2²⁰ = 54243194233 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 54244242809.

It is not an unprimeable number, because it can be changed into a prime (54244242803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 695594 + ... + 769635.

It is an arithmetic number, because the mean of its divisors is an integer number (13561436265).

Almost surely, 2^54244242809 is an apocalyptic number.

It is an amenable number.

54244242809 is a deficient number, since it is larger than the sum of its proper divisors (1502251).

54244242809 is a wasteful number, since it uses less digits than its factorization.

54244242809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1502250.

The product of its (nonzero) digits is 737280, while the sum is 44.

The spelling of 54244242809 in words is "fifty-four billion, two hundred forty-four million, two hundred forty-two thousand, eight hundred nine".