55286687 has 8 divisors (see below), whose sum is σ = 58076160. Its totient is φ = 52529400.

The previous prime is 55286663. The next prime is 55286689. The reversal of 55286687 is 78668255.

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-55286687 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 (55286689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4487 + ... + 11432.

It is an arithmetic number, because the mean of its divisors is an integer number (7259520).

Almost surely, 2^55286687 is an apocalyptic number.

55286687 is a deficient number, since it is larger than the sum of its proper divisors (2789473).

55286687 is a wasteful number, since it uses less digits than its factorization.

55286687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16093.

The product of its digits is 806400, while the sum is 47.

The square root of 55286687 is about 7435.5017988028. The cubic root of 55286687 is about 380.9548631552.

The spelling of 55286687 in words is "fifty-five million, two hundred eighty-six thousand, six hundred eighty-seven".