550209871 has 4 divisors (see below), whose sum is σ = 561916512. Its totient is φ = 538503232.

The previous prime is 550209857. The next prime is 550209893. The reversal of 550209871 is 178902055.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 178902055 = 5 ⋅35780411.

It is a cyclic number.

It is not a de Polignac number, because 550209871 - 2¹³ = 550201679 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 550209871.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (550209371) 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, 5853250 + ... + 5853343.

It is an arithmetic number, because the mean of its divisors is an integer number (140479128).

Almost surely, 2^550209871 is an apocalyptic number.

550209871 is a deficient number, since it is larger than the sum of its proper divisors (11706641).

550209871 is a wasteful number, since it uses less digits than its factorization.

550209871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11706640.

The product of its (nonzero) digits is 25200, while the sum is 37.

The square root of 550209871 is about 23456.5528371072. The cubic root of 550209871 is about 819.4254705447.

The spelling of 550209871 in words is "five hundred fifty million, two hundred nine thousand, eight hundred seventy-one".