55545221243224 has 32 divisors (see below), whose sum is σ = 105592335300000. Its totient is φ = 27387397562112.

The previous prime is 55545221243221. The next prime is 55545221243249. The reversal of 55545221243224 is 42234212254555.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55545221243221) 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, 4914604 + ... + 11629435.

It is an arithmetic number, because the mean of its divisors is an integer number (3299760478125).

Almost surely, 2^{55545221243224} is an apocalyptic number.

It is an amenable number.

55545221243224 is a deficient number, since it is larger than the sum of its proper divisors (50047114056776).

55545221243224 is a wasteful number, since it uses less digits than its factorization.

55545221243224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16549867 (or 16549863 counting only the distinct ones).

The product of its digits is 3840000, while the sum is 46.

Adding to 55545221243224 its reverse (42234212254555), we get a palindrome (97779433497779).

The spelling of 55545221243224 in words is "fifty-five trillion, five hundred forty-five billion, two hundred twenty-one million, two hundred forty-three thousand, two hundred twenty-four".