550553717 has 4 divisors (see below), whose sum is σ = 629204256. Its totient is φ = 471903180.

The previous prime is 550553713. The next prime is 550553753. The reversal of 550553717 is 717355055.

It is a happy number.

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.

It is not a de Polignac number, because 550553717 - 2² = 550553713 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 (550553711) 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, 39325259 + ... + 39325272.

It is an arithmetic number, because the mean of its divisors is an integer number (157301064).

Almost surely, 2^550553717 is an apocalyptic number.

It is an amenable number.

550553717 is a deficient number, since it is larger than the sum of its proper divisors (78650539).

550553717 is an equidigital number, since it uses as much as digits as its factorization.

550553717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78650538.

The product of its (nonzero) digits is 91875, while the sum is 38.

The square root of 550553717 is about 23463.8811154506. The cubic root of 550553717 is about 819.5961311795.

The spelling of 550553717 in words is "five hundred fifty million, five hundred fifty-three thousand, seven hundred seventeen".