55221659347 has 2 divisors, whose sum is σ = 55221659348. Its totient is φ = 55221659346.

The previous prime is 55221659327. The next prime is 55221659359. The reversal of 55221659347 is 74395612255.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55221659347 is a prime.

It is a super-3 number, since 3×55221659347³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 55221659347.

It is not a weakly prime, because it can be changed into another prime (55221659327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27610829673 + 27610829674.

It is an arithmetic number, because the mean of its divisors is an integer number (27610829674).

Almost surely, 2^55221659347 is an apocalyptic number.

55221659347 is a deficient number, since it is larger than the sum of its proper divisors (1).

55221659347 is an equidigital number, since it uses as much as digits as its factorization.

55221659347 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2268000, while the sum is 49.

The spelling of 55221659347 in words is "fifty-five billion, two hundred twenty-one million, six hundred fifty-nine thousand, three hundred forty-seven".