550918709 has 16 divisors (see below), whose sum is σ = 619185600. Its totient is φ = 485842560.

The previous prime is 550918703. The next prime is 550918721. The reversal of 550918709 is 907819055.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 550918709 - 2¹² = 550914613 is a prime.

It is a super-2 number, since 2×550918709² = 607022847852453362, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 550918709.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (550918703) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66569 + ... + 74385.

It is an arithmetic number, because the mean of its divisors is an integer number (38699100).

Almost surely, 2^550918709 is an apocalyptic number.

It is an amenable number.

550918709 is a deficient number, since it is larger than the sum of its proper divisors (68266891).

550918709 is a wasteful number, since it uses less digits than its factorization.

550918709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8020.

The product of its (nonzero) digits is 113400, while the sum is 44.

The square root of 550918709 is about 23471.6575682247. The cubic root of 550918709 is about 819.7772094524. Note that the first 3 decimals are identical.

The spelling of 550918709 in words is "five hundred fifty million, nine hundred eighteen thousand, seven hundred nine".