55421443521355 has 8 divisors (see below), whose sum is σ = 66505790798064. Its totient is φ = 44337115768800.

The previous prime is 55421443521343. The next prime is 55421443521403. The reversal of 55421443521355 is 55312534412455.

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

It is not a de Polignac number, because 55421443521355 - 2⁹ = 55421443520843 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55421443521299 and 55421443521308.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2333265 + ... + 10783645.

It is an arithmetic number, because the mean of its divisors is an integer number (8313223849758).

Almost surely, 2^{55421443521355} is an apocalyptic number.

55421443521355 is a deficient number, since it is larger than the sum of its proper divisors (11084347276709).

55421443521355 is a wasteful number, since it uses less digits than its factorization.

55421443521355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9762077.

The product of its digits is 7200000, while the sum is 49.

The spelling of 55421443521355 in words is "fifty-five trillion, four hundred twenty-one billion, four hundred forty-three million, five hundred twenty-one thousand, three hundred fifty-five".