550303661 has 8 divisors (see below), whose sum is σ = 571035648. Its totient is φ = 529758000.

The previous prime is 550303657. The next prime is 550303697. The reversal of 550303661 is 166303055.

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 550303661 - 2² = 550303657 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (550300661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40550 + ... + 52391.

It is an arithmetic number, because the mean of its divisors is an integer number (71379456).

Almost surely, 2^550303661 is an apocalyptic number.

It is an amenable number.

550303661 is a deficient number, since it is larger than the sum of its proper divisors (20731987).

550303661 is a wasteful number, since it uses less digits than its factorization.

550303661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93163.

The product of its (nonzero) digits is 8100, while the sum is 29.

The square root of 550303661 is about 23458.5519800349. The cubic root of 550303661 is about 819.4720282629.

The spelling of 550303661 in words is "five hundred fifty million, three hundred three thousand, six hundred sixty-one".