505192505 has 4 divisors (see below), whose sum is σ = 606231012. Its totient is φ = 404154000.

The previous prime is 505192489. The next prime is 505192511. The reversal of 505192505 is 505291505.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 228735376 + 276457129 = 15124^2 + 16627^2 .

It is not a de Polignac number, because 505192505 - 2⁴ = 505192489 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50519246 + ... + 50519255.

It is an arithmetic number, because the mean of its divisors is an integer number (151557753).

Almost surely, 2^505192505 is an apocalyptic number.

It is an amenable number.

505192505 is a deficient number, since it is larger than the sum of its proper divisors (101038507).

505192505 is a wasteful number, since it uses less digits than its factorization.

505192505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101038506.

The product of its (nonzero) digits is 11250, while the sum is 32.

The square root of 505192505 is about 22476.4878261707. The cubic root of 505192505 is about 796.4385987406.

The spelling of 505192505 in words is "five hundred five million, one hundred ninety-two thousand, five hundred five".