550973891 has 8 divisors (see below), whose sum is σ = 596433600. Its totient is φ = 505953792.

The previous prime is 550973873. The next prime is 550973909. The reversal of 550973891 is 198379055.

It is an interprime number because it is at equal distance from previous prime (550973873) and next prime (550973909).

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 550973891 - 2⁶ = 550973827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (550970891) 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, 107291 + ... + 112308.

It is an arithmetic number, because the mean of its divisors is an integer number (74554200).

Almost surely, 2^550973891 is an apocalyptic number.

550973891 is a deficient number, since it is larger than the sum of its proper divisors (45459709).

550973891 is a wasteful number, since it uses less digits than its factorization.

550973891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219805.

The product of its (nonzero) digits is 340200, while the sum is 47.

The square root of 550973891 is about 23472.8330416249. The cubic root of 550973891 is about 819.8045791502.

The spelling of 550973891 in words is "five hundred fifty million, nine hundred seventy-three thousand, eight hundred ninety-one".