5555621105 has 4 divisors (see below), whose sum is σ = 6666745332. Its totient is φ = 4444496880.

The previous prime is 5555621069. The next prime is 5555621111. The reversal of 5555621105 is 5011265555.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1692252769 + 3863368336 = 41137^2 + 62156^2 .

It is not a de Polignac number, because 5555621105 - 2²² = 5551426801 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 555562106 + ... + 555562115.

It is an arithmetic number, because the mean of its divisors is an integer number (1666686333).

Almost surely, 2^5555621105 is an apocalyptic number.

It is an amenable number.

5555621105 is a deficient number, since it is larger than the sum of its proper divisors (1111124227).

5555621105 is a wasteful number, since it uses less digits than its factorization.

5555621105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1111124226.

The product of its (nonzero) digits is 37500, while the sum is 35.

The square root of 5555621105 is about 74536.0389677369. The cubic root of 5555621105 is about 1771.1045809448.

The spelling of 5555621105 in words is "five billion, five hundred fifty-five million, six hundred twenty-one thousand, one hundred five".