550005555549 has 4 divisors (see below), whose sum is σ = 733340740736. Its totient is φ = 366670370364.

The previous prime is 550005555479. The next prime is 550005555557. The reversal of 550005555549 is 945555500055.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 550005555549 - 2²¹ = 550003458397 is a prime.

It is a super-2 number, since 2×550005555549² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 550005555498 and 550005555507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (550005555569) 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, 91667592589 + ... + 91667592594.

It is an arithmetic number, because the mean of its divisors is an integer number (183335185184).

Almost surely, 2^550005555549 is an apocalyptic number.

It is an amenable number.

550005555549 is a deficient number, since it is larger than the sum of its proper divisors (183335185187).

550005555549 is a wasteful number, since it uses less digits than its factorization.

550005555549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183335185186.

The product of its (nonzero) digits is 2812500, while the sum is 48.

The spelling of 550005555549 in words is "five hundred fifty billion, five million, five hundred fifty-five thousand, five hundred forty-nine".