2055606621 has 8 divisors (see below), whose sum is σ = 2829222144. Its totient is φ = 1326197760.

The previous prime is 2055606613. The next prime is 2055606647. The reversal of 2055606621 is 1266065502.

It is a happy number.

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

It is not a de Polignac number, because 2055606621 - 2³ = 2055606613 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2055606611) 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, 11051556 + ... + 11051741.

It is an arithmetic number, because the mean of its divisors is an integer number (353652768).

Almost surely, 2^2055606621 is an apocalyptic number.

It is an amenable number.

2055606621 is a deficient number, since it is larger than the sum of its proper divisors (773615523).

2055606621 is a wasteful number, since it uses less digits than its factorization.

2055606621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22103331.

The product of its (nonzero) digits is 21600, while the sum is 33.

The square root of 2055606621 is about 45338.7981865422. The cubic root of 2055606621 is about 1271.4911332036.

The spelling of 2055606621 in words is "two billion, fifty-five million, six hundred six thousand, six hundred twenty-one".