550311592081 has 4 divisors (see below), whose sum is σ = 552714699700. Its totient is φ = 547908484464.

The previous prime is 550311591967. The next prime is 550311592093. The reversal of 550311592081 is 180295113055.

It is a happy number.

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 332744385600 + 217567206481 = 576840^2 + 466441^2 .

It is a cyclic number.

It is not a de Polignac number, because 550311592081 - 2¹⁷ = 550311461009 is a prime.

It is a super-2 number, since 2×550311592081² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (550311592681) 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, 1201553466 + ... + 1201553923.

It is an arithmetic number, because the mean of its divisors is an integer number (138178674925).

Almost surely, 2^550311592081 is an apocalyptic number.

It is an amenable number.

550311592081 is a deficient number, since it is larger than the sum of its proper divisors (2403107619).

550311592081 is a wasteful number, since it uses less digits than its factorization.

550311592081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2403107618.

The product of its (nonzero) digits is 54000, while the sum is 40.

The spelling of 550311592081 in words is "five hundred fifty billion, three hundred eleven million, five hundred ninety-two thousand, eighty-one".