55450263626221 has 16 divisors (see below), whose sum is σ = 59728885982208. Its totient is φ = 51327358156800.

The previous prime is 55450263626189. The next prime is 55450263626293. The reversal of 55450263626221 is 12262636205455.

It is a cyclic number.

It is not a de Polignac number, because 55450263626221 - 2⁵ = 55450263626189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55450263620221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34257901 + ... + 35839981.

It is an arithmetic number, because the mean of its divisors is an integer number (3733055373888).

Almost surely, 2^{55450263626221} is an apocalyptic number.

It is an amenable number.

55450263626221 is a deficient number, since it is larger than the sum of its proper divisors (4278622355987).

55450263626221 is a wasteful number, since it uses less digits than its factorization.

55450263626221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1631292.

The product of its (nonzero) digits is 5184000, while the sum is 49.

The spelling of 55450263626221 in words is "fifty-five trillion, four hundred fifty billion, two hundred sixty-three million, six hundred twenty-six thousand, two hundred twenty-one".