501147613 has 4 divisors (see below), whose sum is σ = 501196860. Its totient is φ = 501098368.

The previous prime is 501147589. The next prime is 501147623. The reversal of 501147613 is 316741105.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 346443769 + 154703844 = 18613^2 + 12438^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-501147613 is a prime.

It is a super-2 number, since 2×501147613² = 502297860031195538, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (501147623) 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, 3070 + ... + 31807.

It is an arithmetic number, because the mean of its divisors is an integer number (125299215).

Almost surely, 2^501147613 is an apocalyptic number.

It is an amenable number.

501147613 is a deficient number, since it is larger than the sum of its proper divisors (49247).

501147613 is a wasteful number, since it uses less digits than its factorization.

501147613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49246.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 501147613 is about 22386.3264739885. The cubic root of 501147613 is about 794.3073026852.

Adding to 501147613 its reverse (316741105), we get a palindrome (817888718).

The spelling of 501147613 in words is "five hundred one million, one hundred forty-seven thousand, six hundred thirteen".