55009685 has 8 divisors (see below), whose sum is σ = 67547040. Its totient is φ = 42984144.

The previous prime is 55009681. The next prime is 55009687. The reversal of 55009685 is 58690055.

55009685 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 55009685 - 2² = 55009681 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55009681) by changing a digit.

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, 127715 + ... + 128144.

It is an arithmetic number, because the mean of its divisors is an integer number (8443380).

Almost surely, 2^55009685 is an apocalyptic number.

It is an amenable number.

55009685 is a deficient number, since it is larger than the sum of its proper divisors (12537355).

55009685 is a wasteful number, since it uses less digits than its factorization.

55009685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255907.

The product of its (nonzero) digits is 54000, while the sum is 38.

The square root of 55009685 is about 7416.8514209198. The cubic root of 55009685 is about 380.3175669446.

The spelling of 55009685 in words is "fifty-five million, nine thousand, six hundred eighty-five".