55155221334 has 48 divisors (see below), whose sum is σ = 125830298880. Its totient is φ = 17412220080.

The previous prime is 55155221327. The next prime is 55155221347. The reversal of 55155221334 is 43312255155.

55155221334 is a `hidden beast` number, since 5 + 51 + 55 + 221 + 334 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1211239 + ... + 1255949.

It is an arithmetic number, because the mean of its divisors is an integer number (2621464560).

Almost surely, 2^55155221334 is an apocalyptic number.

55155221334 is an abundant number, since it is smaller than the sum of its proper divisors (70675077546).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55155221334 is a wasteful number, since it uses less digits than its factorization.

55155221334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48345 (or 48342 counting only the distinct ones).

The product of its digits is 90000, while the sum is 36.

Adding to 55155221334 its reverse (43312255155), we get a palindrome (98467476489).

The spelling of 55155221334 in words is "fifty-five billion, one hundred fifty-five million, two hundred twenty-one thousand, three hundred thirty-four".