550215520105 has 4 divisors (see below), whose sum is σ = 660258624132. Its totient is φ = 440172416080.

The previous prime is 550215520087. The next prime is 550215520111. The reversal of 550215520105 is 501025512055.

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 416706398784 + 133509121321 = 645528^2 + 365389^2 .

It is not a de Polignac number, because 550215520105 - 2⁹ = 550215519593 is a prime.

It is a super-2 number, since 2×550215520105² (a number of 24 digits) contains 22 as substring.

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, 55021552006 + ... + 55021552015.

It is an arithmetic number, because the mean of its divisors is an integer number (165064656033).

Almost surely, 2^550215520105 is an apocalyptic number.

It is an amenable number.

550215520105 is a deficient number, since it is larger than the sum of its proper divisors (110043104027).

550215520105 is a wasteful number, since it uses less digits than its factorization.

550215520105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110043104026.

The product of its (nonzero) digits is 12500, while the sum is 31.

The spelling of 550215520105 in words is "five hundred fifty billion, two hundred fifteen million, five hundred twenty thousand, one hundred five".