55055905 has 8 divisors (see below), whose sum is σ = 68939712. Its totient is φ = 42129648.

The previous prime is 55055893. The next prime is 55055921. The reversal of 55055905 is 50955055.

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 55055905 - 2⁵ = 55055873 is a prime.

It is a Duffinian number.

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, 239259 + ... + 239488.

It is an arithmetic number, because the mean of its divisors is an integer number (8617464).

Almost surely, 2^55055905 is an apocalyptic number.

It is an amenable number.

55055905 is a deficient number, since it is larger than the sum of its proper divisors (13883807).

55055905 is a wasteful number, since it uses less digits than its factorization.

55055905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 478775.

The product of its (nonzero) digits is 28125, while the sum is 34.

The square root of 55055905 is about 7419.9666441299. The cubic root of 55055905 is about 380.4240533876.

The spelling of 55055905 in words is "fifty-five million, fifty-five thousand, nine hundred five".