505161071 has 4 divisors (see below), whose sum is σ = 505304352. Its totient is φ = 505017792.

The previous prime is 505161053. The next prime is 505161077. The reversal of 505161071 is 170161505.

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 505161071 - 2²⁶ = 438052207 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 505161071.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505161077) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66215 + ... + 73448.

It is an arithmetic number, because the mean of its divisors is an integer number (126326088).

Almost surely, 2^505161071 is an apocalyptic number.

505161071 is a deficient number, since it is larger than the sum of its proper divisors (143281).

505161071 is a wasteful number, since it uses less digits than its factorization.

505161071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143280.

The product of its (nonzero) digits is 1050, while the sum is 26.

The square root of 505161071 is about 22475.7885512389. The cubic root of 505161071 is about 796.4220797767.

The spelling of 505161071 in words is "five hundred five million, one hundred sixty-one thousand, seventy-one".