505165515 has 16 divisors (see below), whose sum is σ = 810044448. Its totient is φ = 268828416.

The previous prime is 505165501. The next prime is 505165547. The reversal of 505165515 is 515561505.

It is not a de Polignac number, because 505165515 - 2¹⁶ = 505099979 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29992 + ... + 43701.

It is an arithmetic number, because the mean of its divisors is an integer number (50627778).

Almost surely, 2^505165515 is an apocalyptic number.

505165515 is a deficient number, since it is larger than the sum of its proper divisors (304878933).

505165515 is a wasteful number, since it uses less digits than its factorization.

505165515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74158.

The product of its (nonzero) digits is 18750, while the sum is 33.

The square root of 505165515 is about 22475.8874129588. The cubic root of 505165515 is about 796.4244151964.

The spelling of 505165515 in words is "five hundred five million, one hundred sixty-five thousand, five hundred fifteen".