550331663 has 4 divisors (see below), whose sum is σ = 628950480. Its totient is φ = 471712848.

The previous prime is 550331653. The next prime is 550331669. The reversal of 550331663 is 366133055.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 550331663 - 2⁴ = 550331647 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 (550331669) 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, 39309398 + ... + 39309411.

It is an arithmetic number, because the mean of its divisors is an integer number (157237620).

Almost surely, 2^550331663 is an apocalyptic number.

550331663 is a deficient number, since it is larger than the sum of its proper divisors (78618817).

550331663 is an equidigital number, since it uses as much as digits as its factorization.

550331663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78618816.

The product of its (nonzero) digits is 24300, while the sum is 32.

The square root of 550331663 is about 23459.1488123504. The cubic root of 550331663 is about 819.4859275384.

The spelling of 550331663 in words is "five hundred fifty million, three hundred thirty-one thousand, six hundred sixty-three".