55985307 has 8 divisors (see below), whose sum is σ = 85310976. Its totient is φ = 31991592.

The previous prime is 55985297. The next prime is 55985309. The reversal of 55985307 is 70358955.

55985307 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 not a de Polignac number, because 55985307 - 2¹⁰ = 55984283 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55985309) 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, 1332963 + ... + 1333004.

It is an arithmetic number, because the mean of its divisors is an integer number (10663872).

Almost surely, 2^55985307 is an apocalyptic number.

55985307 is a deficient number, since it is larger than the sum of its proper divisors (29325669).

55985307 is a wasteful number, since it uses less digits than its factorization.

55985307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2665977.

The product of its (nonzero) digits is 189000, while the sum is 42.

The square root of 55985307 is about 7482.3329917881. The cubic root of 55985307 is about 382.5527732731.

The spelling of 55985307 in words is "fifty-five million, nine hundred eighty-five thousand, three hundred seven".