55561122229 has 8 divisors (see below), whose sum is σ = 58490591040. Its totient is φ = 52632173376.

The previous prime is 55561122217. The next prime is 55561122251. The reversal of 55561122229 is 92222116555.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55561122229 - 2¹⁹ = 55560597941 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 55561122191 and 55561122200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55561122259) 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 in 7 ways as a sum of consecutive naturals, for example, 99789 + ... + 347965.

It is an arithmetic number, because the mean of its divisors is an integer number (7311323880).

Almost surely, 2^55561122229 is an apocalyptic number.

It is an amenable number.

55561122229 is a deficient number, since it is larger than the sum of its proper divisors (2929468811).

55561122229 is a wasteful number, since it uses less digits than its factorization.

55561122229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259979.

The product of its digits is 108000, while the sum is 40.

The spelling of 55561122229 in words is "fifty-five billion, five hundred sixty-one million, one hundred twenty-two thousand, two hundred twenty-nine".