550115515 has 4 divisors (see below), whose sum is σ = 660138624. Its totient is φ = 440092408.

The previous prime is 550115513. The next prime is 550115521. The reversal of 550115515 is 515511055.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 550115515 - 2¹ = 550115513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (550115513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55011547 + ... + 55011556.

It is an arithmetic number, because the mean of its divisors is an integer number (165034656).

Almost surely, 2^550115515 is an apocalyptic number.

550115515 is a deficient number, since it is larger than the sum of its proper divisors (110023109).

550115515 is a wasteful number, since it uses less digits than its factorization.

550115515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110023108.

The product of its (nonzero) digits is 3125, while the sum is 28.

The square root of 550115515 is about 23454.5414578925. The cubic root of 550115515 is about 819.3786265227.

The spelling of 550115515 in words is "five hundred fifty million, one hundred fifteen thousand, five hundred fifteen".