550404531505 has 4 divisors (see below), whose sum is σ = 660485437812. Its totient is φ = 440323625200.

The previous prime is 550404531493. The next prime is 550404531539. The reversal of 550404531505 is 505135404055.

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 124773552289 + 425630979216 = 353233^2 + 652404^2 .

It is not a de Polignac number, because 550404531505 - 2⁹ = 550404530993 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55040453146 + ... + 55040453155.

It is an arithmetic number, because the mean of its divisors is an integer number (165121359453).

Almost surely, 2^550404531505 is an apocalyptic number.

It is an amenable number.

550404531505 is a deficient number, since it is larger than the sum of its proper divisors (110080906307).

550404531505 is a wasteful number, since it uses less digits than its factorization.

550404531505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110080906306.

The product of its (nonzero) digits is 150000, while the sum is 37.

The spelling of 550404531505 in words is "five hundred fifty billion, four hundred four million, five hundred thirty-one thousand, five hundred five".