55220857193 has 8 divisors (see below), whose sum is σ = 55606763520. Its totient is φ = 54836289360.

The previous prime is 55220857177. The next prime is 55220857207. The reversal of 55220857193 is 39175802255.

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 55220857193 - 2⁴ = 55220857177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55220877193) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 251753 + ... + 416918.

It is an arithmetic number, because the mean of its divisors is an integer number (6950845440).

Almost surely, 2^55220857193 is an apocalyptic number.

It is an amenable number.

55220857193 is a deficient number, since it is larger than the sum of its proper divisors (385906327).

55220857193 is a wasteful number, since it uses less digits than its factorization.

55220857193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 669247.

The product of its (nonzero) digits is 756000, while the sum is 47.

The spelling of 55220857193 in words is "fifty-five billion, two hundred twenty million, eight hundred fifty-seven thousand, one hundred ninety-three".