550313661 has 8 divisors (see below), whose sum is σ = 733985280. Its totient is φ = 366758912.

The previous prime is 550313651. The next prime is 550313669. The reversal of 550313661 is 166313055.

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 550313661 - 2⁵ = 550313629 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (550313669) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17565 + ... + 37538.

It is an arithmetic number, because the mean of its divisors is an integer number (91748160).

Almost surely, 2^550313661 is an apocalyptic number.

It is an amenable number.

550313661 is a deficient number, since it is larger than the sum of its proper divisors (183671619).

550313661 is a wasteful number, since it uses less digits than its factorization.

550313661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58435.

The product of its (nonzero) digits is 8100, while the sum is 30.

The square root of 550313661 is about 23458.7651209521. The cubic root of 550313661 is about 819.4769919894.

The spelling of 550313661 in words is "five hundred fifty million, three hundred thirteen thousand, six hundred sixty-one".