55005505 has 8 divisors (see below), whose sum is σ = 66298752. Its totient is φ = 43809648.

The previous prime is 55005481. The next prime is 55005521. The reversal of 55005505 is 50550055.

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 55005505 - 2⁵ = 55005473 is a prime.

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 55005505.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23097 + ... + 25366.

It is an arithmetic number, because the mean of its divisors is an integer number (8287344).

Almost surely, 2^55005505 is an apocalyptic number.

It is an amenable number.

55005505 is a deficient number, since it is larger than the sum of its proper divisors (11293247).

55005505 is a wasteful number, since it uses less digits than its factorization.

55005505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48695.

The product of its (nonzero) digits is 3125, while the sum is 25.

The square root of 55005505 is about 7416.5696248333. The cubic root of 55005505 is about 380.3079336851.

The spelling of 55005505 in words is "fifty-five million, five thousand, five hundred five".