55008505 has 8 divisors (see below), whose sum is σ = 68286600. Its totient is φ = 42489216.

The previous prime is 55008469. The next prime is 55008521. The reversal of 55008505 is 50580055.

It can be written as a sum of positive squares in 4 ways, for example, as 19044496 + 35964009 = 4364^2 + 5997^2 .

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 55008505 - 2⁹ = 55007993 is a prime.

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, 189540 + ... + 189829.

It is an arithmetic number, because the mean of its divisors is an integer number (8535825).

Almost surely, 2^55008505 is an apocalyptic number.

It is an amenable number.

55008505 is a deficient number, since it is larger than the sum of its proper divisors (13278095).

55008505 is a wasteful number, since it uses less digits than its factorization.

55008505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379403.

The product of its (nonzero) digits is 5000, while the sum is 28.

The square root of 55008505 is about 7416.7718719130. The cubic root of 55008505 is about 380.3148475571.

The spelling of 55008505 in words is "fifty-five million, eight thousand, five hundred five".