505958915 has 16 divisors (see below), whose sum is σ = 756967680. Its totient is φ = 315402720.

The previous prime is 505958909. The next prime is 505958927. The reversal of 505958915 is 519859505.

It is not a de Polignac number, because 505958915 - 2¹⁰ = 505957891 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 505958915.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 656705 + ... + 657474.

It is an arithmetic number, because the mean of its divisors is an integer number (47310480).

Almost surely, 2^505958915 is an apocalyptic number.

505958915 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

505958915 is a deficient number, since it is larger than the sum of its proper divisors (251008765).

505958915 is a wasteful number, since it uses less digits than its factorization.

505958915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1314202.

The product of its (nonzero) digits is 405000, while the sum is 47.

The square root of 505958915 is about 22493.5305143501. The cubic root of 505958915 is about 796.8411450233.

The spelling of 505958915 in words is "five hundred five million, nine hundred fifty-eight thousand, nine hundred fifteen".