55163232506 has 8 divisors (see below), whose sum is σ = 84505377600. Its totient is φ = 26994773308.

The previous prime is 55163232491. The next prime is 55163232517. The reversal of 55163232506 is 60523236155.

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

It is a super-2 number, since 2×55163232506² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 55163232506.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 293421356 + ... + 293421543.

It is an arithmetic number, because the mean of its divisors is an integer number (10563172200).

Almost surely, 2^55163232506 is an apocalyptic number.

55163232506 is a deficient number, since it is larger than the sum of its proper divisors (29342145094).

55163232506 is a wasteful number, since it uses less digits than its factorization.

55163232506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 586842948.

The product of its (nonzero) digits is 162000, while the sum is 38.

The spelling of 55163232506 in words is "fifty-five billion, one hundred sixty-three million, two hundred thirty-two thousand, five hundred six".