505409715 has 24 divisors (see below), whose sum is σ = 879727680. Its totient is φ = 268418304.

The previous prime is 505409713. The next prime is 505409719. The reversal of 505409715 is 517904505.

It is not a de Polignac number, because 505409715 - 2¹ = 505409713 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 505409715.

It is not an unprimeable number, because it can be changed into a prime (505409713) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12742 + ... + 34251.

It is an arithmetic number, because the mean of its divisors is an integer number (36655320).

Almost surely, 2^505409715 is an apocalyptic number.

505409715 is a deficient number, since it is larger than the sum of its proper divisors (374317965).

505409715 is a wasteful number, since it uses less digits than its factorization.

505409715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47243 (or 47240 counting only the distinct ones).

The product of its (nonzero) digits is 31500, while the sum is 36.

The square root of 505409715 is about 22481.3192450977. The cubic root of 505409715 is about 796.5527266152.

The spelling of 505409715 in words is "five hundred five million, four hundred nine thousand, seven hundred fifteen".