550150561 has 4 divisors (see below), whose sum is σ = 569121300. Its totient is φ = 531179824.

The previous prime is 550150439. The next prime is 550150597. The reversal of 550150561 is 165051055.

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

It can be written as a sum of positive squares in 2 ways, for example, as 374190336 + 175960225 = 19344^2 + 13265^2 .

It is a cyclic number.

It is not a de Polignac number, because 550150561 - 2⁹ = 550150049 is a prime.

It is a super-2 number, since 2×550150561² = 605331279537229442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (550150261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9485326 + ... + 9485383.

It is an arithmetic number, because the mean of its divisors is an integer number (142280325).

Almost surely, 2^550150561 is an apocalyptic number.

It is an amenable number.

550150561 is a deficient number, since it is larger than the sum of its proper divisors (18970739).

550150561 is a wasteful number, since it uses less digits than its factorization.

550150561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18970738.

The product of its (nonzero) digits is 3750, while the sum is 28.

The square root of 550150561 is about 23455.2885507725. The cubic root of 550150561 is about 819.3960261008.

The spelling of 550150561 in words is "five hundred fifty million, one hundred fifty thousand, five hundred sixty-one".