550571611 has 4 divisors (see below), whose sum is σ = 550642752. Its totient is φ = 550500472.

The previous prime is 550571599. The next prime is 550571617. The reversal of 550571611 is 116175055.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 116175055 = 5 ⋅23235011.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-550571611 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (550571617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22315 + ... + 39988.

It is an arithmetic number, because the mean of its divisors is an integer number (137660688).

Almost surely, 2^550571611 is an apocalyptic number.

550571611 is a deficient number, since it is larger than the sum of its proper divisors (71141).

550571611 is an equidigital number, since it uses as much as digits as its factorization.

550571611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71140.

The product of its (nonzero) digits is 5250, while the sum is 31.

The square root of 550571611 is about 23464.2624218193. The cubic root of 550571611 is about 819.6050105397.

The spelling of 550571611 in words is "five hundred fifty million, five hundred seventy-one thousand, six hundred eleven".