55405105 has 8 divisors (see below), whose sum is σ = 75984192. Its totient is φ = 37992048.

The previous prime is 55405099. The next prime is 55405111. The reversal of 55405105 is 50150455.

55405105 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (55405099) and next prime (55405111).

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

It is a cyclic number.

It is not a de Polignac number, because 55405105 - 2⁷ = 55404977 is a prime.

It is a super-2 number, since 2×55405105² = 6139451320122050, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55405105.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 791467 + ... + 791536.

It is an arithmetic number, because the mean of its divisors is an integer number (9498024).

Almost surely, 2^55405105 is an apocalyptic number.

It is an amenable number.

55405105 is a deficient number, since it is larger than the sum of its proper divisors (20579087).

55405105 is a wasteful number, since it uses less digits than its factorization.

55405105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1583015.

The product of its (nonzero) digits is 2500, while the sum is 25.

The square root of 55405105 is about 7443.4605527268. The cubic root of 55405105 is about 381.2266569959.

The spelling of 55405105 in words is "fifty-five million, four hundred five thousand, one hundred five".