550473553 has 4 divisors (see below), whose sum is σ = 629112640. Its totient is φ = 471834468.

The previous prime is 550473463. The next prime is 550473571. The reversal of 550473553 is 355374055.

550473553 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 a de Polignac number, because none of the positive numbers 2^k-550473553 is a prime.

It is a super-2 number, since 2×550473553² = 606042265104887618, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (550470553) 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, 39319533 + ... + 39319546.

It is an arithmetic number, because the mean of its divisors is an integer number (157278160).

Almost surely, 2^550473553 is an apocalyptic number.

It is an amenable number.

550473553 is a deficient number, since it is larger than the sum of its proper divisors (78639087).

550473553 is an equidigital number, since it uses as much as digits as its factorization.

550473553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78639086.

The product of its (nonzero) digits is 157500, while the sum is 37.

The square root of 550473553 is about 23462.1728107181. The cubic root of 550473553 is about 819.5563498397.

The spelling of 550473553 in words is "five hundred fifty million, four hundred seventy-three thousand, five hundred fifty-three".