55665847 has 8 divisors (see below), whose sum is σ = 57283200. Its totient is φ = 54069600.

The previous prime is 55665829. The next prime is 55665853. The reversal of 55665847 is 74856655.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55665847 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55665797 and 55665806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55665047) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 154 + ... + 10552.

It is an arithmetic number, because the mean of its divisors is an integer number (7160400).

Almost surely, 2^55665847 is an apocalyptic number.

55665847 is a deficient number, since it is larger than the sum of its proper divisors (1617353).

55665847 is a wasteful number, since it uses less digits than its factorization.

55665847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10553.

The product of its digits is 1008000, while the sum is 46.

The square root of 55665847 is about 7460.9548316553. The cubic root of 55665847 is about 381.8237516486.

The spelling of 55665847 in words is "fifty-five million, six hundred sixty-five thousand, eight hundred forty-seven".