550515665 has 8 divisors (see below), whose sum is σ = 754992960. Its totient is φ = 377496432.

The previous prime is 550515659. The next prime is 550515673. The reversal of 550515665 is 566515055.

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 550515665 - 2¹⁰ = 550514641 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7864475 + ... + 7864544.

It is an arithmetic number, because the mean of its divisors is an integer number (94374120).

Almost surely, 2^550515665 is an apocalyptic number.

It is an amenable number.

550515665 is a deficient number, since it is larger than the sum of its proper divisors (204477295).

550515665 is a wasteful number, since it uses less digits than its factorization.

550515665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15729031.

The product of its (nonzero) digits is 112500, while the sum is 38.

The square root of 550515665 is about 23463.0702381423. The cubic root of 550515665 is about 819.5772483774.

The spelling of 550515665 in words is "five hundred fifty million, five hundred fifteen thousand, six hundred sixty-five".