501340613 has 4 divisors (see below), whose sum is σ = 504947520. Its totient is φ = 497733708.

The previous prime is 501340601. The next prime is 501340627. The reversal of 501340613 is 316043105.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 501340613 - 2⁴ = 501340597 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (501340633) 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 3 ways as a sum of consecutive naturals, for example, 1803245 + ... + 1803522.

It is an arithmetic number, because the mean of its divisors is an integer number (126236880).

Almost surely, 2^501340613 is an apocalyptic number.

It is an amenable number.

501340613 is a deficient number, since it is larger than the sum of its proper divisors (3606907).

501340613 is a wasteful number, since it uses less digits than its factorization.

501340613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3606906.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 501340613 is about 22390.6367260960. The cubic root of 501340613 is about 794.4092564343.

Adding to 501340613 its reverse (316043105), we get a palindrome (817383718).

The spelling of 501340613 in words is "five hundred one million, three hundred forty thousand, six hundred thirteen".