550859287 has 4 divisors (see below), whose sum is σ = 600937416. Its totient is φ = 500781160.

The previous prime is 550859237. The next prime is 550859303. The reversal of 550859287 is 782958055.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-550859287 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 550859287.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (550859207) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25039048 + ... + 25039069.

It is an arithmetic number, because the mean of its divisors is an integer number (150234354).

Almost surely, 2^550859287 is an apocalyptic number.

550859287 is a deficient number, since it is larger than the sum of its proper divisors (50078129).

550859287 is a wasteful number, since it uses less digits than its factorization.

550859287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50078128.

The product of its (nonzero) digits is 1008000, while the sum is 49.

The square root of 550859287 is about 23470.3917095561. The cubic root of 550859287 is about 819.7477347150.

The spelling of 550859287 in words is "five hundred fifty million, eight hundred fifty-nine thousand, two hundred eighty-seven".