551005005505 has 4 divisors (see below), whose sum is σ = 661206006612. Its totient is φ = 440804004400.

The previous prime is 551005005503. The next prime is 551005005511. The reversal of 551005005505 is 505500500155.

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 335227104144 + 215777901361 = 578988^2 + 464519^2 .

It is not a de Polignac number, because 551005005505 - 2¹ = 551005005503 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (551005005503) 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, 55100500546 + ... + 55100500555.

It is an arithmetic number, because the mean of its divisors is an integer number (165301501653).

Almost surely, 2^551005005505 is an apocalyptic number.

It is an amenable number.

551005005505 is a deficient number, since it is larger than the sum of its proper divisors (110201001107).

551005005505 is a wasteful number, since it uses less digits than its factorization.

551005005505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110201001106.

The product of its (nonzero) digits is 15625, while the sum is 31.

It can be divided in two parts, 55100 and 5005505, that added together give a palindrome (5060605).

The spelling of 551005005505 in words is "five hundred fifty-one billion, five million, five thousand, five hundred five".