55944522791 has 4 divisors (see below), whose sum is σ = 55953653784. Its totient is φ = 55935391800.

The previous prime is 55944522779. The next prime is 55944522877. The reversal of 55944522791 is 19722544955.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19722544955 = 5 ⋅3944508991.

It is a cyclic number.

It is not a de Polignac number, because 55944522791 - 2¹⁰ = 55944521767 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 (55944522721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4556300 + ... + 4568561.

It is an arithmetic number, because the mean of its divisors is an integer number (13988413446).

Almost surely, 2^55944522791 is an apocalyptic number.

55944522791 is a deficient number, since it is larger than the sum of its proper divisors (9130993).

55944522791 is an equidigital number, since it uses as much as digits as its factorization.

55944522791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9130992.

The product of its digits is 4536000, while the sum is 53.

The spelling of 55944522791 in words is "fifty-five billion, nine hundred forty-four million, five hundred twenty-two thousand, seven hundred ninety-one".