512245505 has 4 divisors (see below), whose sum is σ = 614694612. Its totient is φ = 409796400.

The previous prime is 512245499. The next prime is 512245523. The reversal of 512245505 is 505542215.

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 240622144 + 271623361 = 15512^2 + 16481^2 .

It is a de Polignac number, because none of the positive numbers 2^k-512245505 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, 51224546 + ... + 51224555.

It is an arithmetic number, because the mean of its divisors is an integer number (153673653).

Almost surely, 2^512245505 is an apocalyptic number.

It is an amenable number.

512245505 is a deficient number, since it is larger than the sum of its proper divisors (102449107).

512245505 is a wasteful number, since it uses less digits than its factorization.

512245505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102449106.

The product of its (nonzero) digits is 10000, while the sum is 29.

The square root of 512245505 is about 22632.8412931298. The cubic root of 512245505 is about 800.1278467554.

The spelling of 512245505 in words is "five hundred twelve million, two hundred forty-five thousand, five hundred five".