508621 has 2 divisors, whose sum is σ = 508622. Its totient is φ = 508620.

The previous prime is 508619. The next prime is 508637. The reversal of 508621 is 126805.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 470596 + 38025 = 686^2 + 195^2 .

It is a cyclic number.

It is not a de Polignac number, because 508621 - 2¹ = 508619 is a prime.

Together with 508619, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 508592 and 508601.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (508661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 254310 + 254311.

It is an arithmetic number, because the mean of its divisors is an integer number (254311).

2⁵⁰⁸⁶²¹ is an apocalyptic number.

It is an amenable number.

508621 is a deficient number, since it is larger than the sum of its proper divisors (1).

508621 is an equidigital number, since it uses as much as digits as its factorization.

508621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 508621 is about 713.1766961981. The cubic root of 508621 is about 79.8236218367.

The spelling of 508621 in words is "five hundred eight thousand, six hundred twenty-one".