505245513 has 8 divisors (see below), whose sum is σ = 674200800. Its totient is φ = 336560288.

The previous prime is 505245479. The next prime is 505245541. The reversal of 505245513 is 315542505.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 505245513 - 2⁹ = 505245001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (505245553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63108 + ... + 70661.

It is an arithmetic number, because the mean of its divisors is an integer number (84275100).

Almost surely, 2^505245513 is an apocalyptic number.

It is an amenable number.

505245513 is a deficient number, since it is larger than the sum of its proper divisors (168955287).

505245513 is a wasteful number, since it uses less digits than its factorization.

505245513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135031.

The product of its (nonzero) digits is 15000, while the sum is 30.

The square root of 505245513 is about 22477.6669830301. Note that the first 3 decimals coincide. The cubic root of 505245513 is about 796.4664535618.

The spelling of 505245513 in words is "five hundred five million, two hundred forty-five thousand, five hundred thirteen".