550005560557 has 4 divisors (see below), whose sum is σ = 551991140476. Its totient is φ = 548019980640.

The previous prime is 550005560521. The next prime is 550005560569. The reversal of 550005560557 is 755065500055.

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 206860322761 + 343145237796 = 454819^2 + 585786^2 .

It is a cyclic number.

It is not a de Polignac number, because 550005560557 - 2³⁹ = 249746669 is a prime.

It is a super-2 number, since 2×550005560557² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (550005560597) 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, 992789544 + ... + 992790097.

It is an arithmetic number, because the mean of its divisors is an integer number (137997785119).

Almost surely, 2^550005560557 is an apocalyptic number.

It is an amenable number.

550005560557 is a deficient number, since it is larger than the sum of its proper divisors (1985579919).

550005560557 is a wasteful number, since it uses less digits than its factorization.

550005560557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1985579918.

The product of its (nonzero) digits is 656250, while the sum is 43.

The spelling of 550005560557 in words is "five hundred fifty billion, five million, five hundred sixty thousand, five hundred fifty-seven".