505171505 has 16 divisors (see below), whose sum is σ = 626655744. Its totient is φ = 390541440.

The previous prime is 505171483. The next prime is 505171519.

505171505 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 505171505 - 2²⁶ = 438062641 is a prime.

It is a Duffinian number.

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, 130934 + ... + 134736.

It is an arithmetic number, because the mean of its divisors is an integer number (39165984).

Almost surely, 2^505171505 is an apocalyptic number.

It is an amenable number.

505171505 is a deficient number, since it is larger than the sum of its proper divisors (121484239).

505171505 is a wasteful number, since it uses less digits than its factorization.

505171505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4696.

The product of its (nonzero) digits is 4375, while the sum is 29.

The square root of 505171505 is about 22476.0206664792. The cubic root of 505171505 is about 796.4275630514.

The spelling of 505171505 in words is "five hundred five million, one hundred seventy-one thousand, five hundred five".