500133521 has 2 divisors, whose sum is σ = 500133522. Its totient is φ = 500133520.

The previous prime is 500133499. The next prime is 500133541. The reversal of 500133521 is 125331005.

It is an a-pointer prime, because the next prime (500133541) can be obtained adding 500133521 to its sum of digits (20).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 473497600 + 26635921 = 21760^2 + 5161^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-500133521 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 500133493 and 500133502.

It is not a weakly prime, because it can be changed into another prime (500133541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250066760 + 250066761.

It is an arithmetic number, because the mean of its divisors is an integer number (250066761).

Almost surely, 2^500133521 is an apocalyptic number.

It is an amenable number.

500133521 is a deficient number, since it is larger than the sum of its proper divisors (1).

500133521 is an equidigital number, since it uses as much as digits as its factorization.

500133521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 450, while the sum is 20.

The square root of 500133521 is about 22363.6651960272. The cubic root of 500133521 is about 793.7711701548.

Adding to 500133521 its reverse (125331005), we get a palindrome (625464526).

The spelling of 500133521 in words is "five hundred million, one hundred thirty-three thousand, five hundred twenty-one".