55105532321 has 8 divisors (see below), whose sum is σ = 63000257664. Its totient is φ = 47216433600.

The previous prime is 55105532309. The next prime is 55105532393. The reversal of 55105532321 is 12323550155.

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

It is not a de Polignac number, because 55105532321 - 2¹⁴ = 55105515937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55105532221) 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 7 ways as a sum of consecutive naturals, for example, 1385645 + ... + 1424858.

It is an arithmetic number, because the mean of its divisors is an integer number (7875032208).

Almost surely, 2^55105532321 is an apocalyptic number.

It is an amenable number.

55105532321 is a deficient number, since it is larger than the sum of its proper divisors (7894725343).

55105532321 is a wasteful number, since it uses less digits than its factorization.

55105532321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2813311.

The product of its (nonzero) digits is 22500, while the sum is 32.

The spelling of 55105532321 in words is "fifty-five billion, one hundred five million, five hundred thirty-two thousand, three hundred twenty-one".