550742317 has 4 divisors (see below), whose sum is σ = 551347776. Its totient is φ = 550136860.

The previous prime is 550742207. The next prime is 550742321. The reversal of 550742317 is 713247055.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 713247055 = 5 ⋅142649411.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-550742317 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 (550742347) 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, 301363 + ... + 303184.

It is an arithmetic number, because the mean of its divisors is an integer number (137836944).

Almost surely, 2^550742317 is an apocalyptic number.

It is an amenable number.

550742317 is a deficient number, since it is larger than the sum of its proper divisors (605459).

550742317 is an equidigital number, since it uses as much as digits as its factorization.

550742317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 605458.

The product of its (nonzero) digits is 29400, while the sum is 34.

The square root of 550742317 is about 23467.8997142906. The cubic root of 550742317 is about 819.6897085957.

The spelling of 550742317 in words is "five hundred fifty million, seven hundred forty-two thousand, three hundred seventeen".