55566317 has 8 divisors (see below), whose sum is σ = 58563360. Its totient is φ = 52576560.

The previous prime is 55566311. The next prime is 55566373. The reversal of 55566317 is 71366555.

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 55566317 - 2⁸ = 55566061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55566311) 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, 21842 + ... + 24252.

It is an arithmetic number, because the mean of its divisors is an integer number (7320420).

Almost surely, 2^55566317 is an apocalyptic number.

It is an amenable number.

55566317 is a deficient number, since it is larger than the sum of its proper divisors (2997043).

55566317 is a wasteful number, since it uses less digits than its factorization.

55566317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3643.

The product of its digits is 94500, while the sum is 38.

The square root of 55566317 is about 7454.2817896830. The cubic root of 55566317 is about 381.5960501513.

The spelling of 55566317 in words is "fifty-five million, five hundred sixty-six thousand, three hundred seventeen".