55505206 has 8 divisors (see below), whose sum is σ = 84193560. Its totient is φ = 27440688.

The previous prime is 55505189. The next prime is 55505207. The reversal of 55505206 is 60250555.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55505207) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 155736 + ... + 156091.

It is an arithmetic number, because the mean of its divisors is an integer number (10524195).

Almost surely, 2^55505206 is an apocalyptic number.

55505206 is a deficient number, since it is larger than the sum of its proper divisors (28688354).

55505206 is a wasteful number, since it uses less digits than its factorization.

55505206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311918.

The product of its (nonzero) digits is 7500, while the sum is 28.

The square root of 55505206 is about 7450.1816085247. The cubic root of 55505206 is about 381.4561076369.

The spelling of 55505206 in words is "fifty-five million, five hundred five thousand, two hundred six".