550566061 has 4 divisors (see below), whose sum is σ = 552325372. Its totient is φ = 548806752.

The previous prime is 550566017. The next prime is 550566077. The reversal of 550566061 is 160665055.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 160665055 = 5 ⋅32133011.

It can be written as a sum of positive squares in 2 ways, for example, as 201810436 + 348755625 = 14206^2 + 18675^2 .

It is a cyclic number.

It is not a de Polignac number, because 550566061 - 2⁷ = 550565933 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 (550560061) 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, 879186 + ... + 879811.

It is an arithmetic number, because the mean of its divisors is an integer number (138081343).

Almost surely, 2^550566061 is an apocalyptic number.

It is an amenable number.

550566061 is a deficient number, since it is larger than the sum of its proper divisors (1759311).

550566061 is a wasteful number, since it uses less digits than its factorization.

550566061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1759310.

The product of its (nonzero) digits is 27000, while the sum is 34.

The square root of 550566061 is about 23464.1441565636. The cubic root of 550566061 is about 819.6022565394.

The spelling of 550566061 in words is "five hundred fifty million, five hundred sixty-six thousand, sixty-one".