503141621 has 2 divisors, whose sum is σ = 503141622. Its totient is φ = 503141620.

The previous prime is 503141593. The next prime is 503141633. The reversal of 503141621 is 126141305.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 492218596 + 10923025 = 22186^2 + 3305^2 .

It is a cyclic number.

It is not a de Polignac number, because 503141621 - 2¹⁰ = 503140597 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (503141671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 251570810 + 251570811.

It is an arithmetic number, because the mean of its divisors is an integer number (251570811).

Almost surely, 2^503141621 is an apocalyptic number.

It is an amenable number.

503141621 is a deficient number, since it is larger than the sum of its proper divisors (1).

503141621 is an equidigital number, since it uses as much as digits as its factorization.

503141621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 503141621 is about 22430.8185539449. The cubic root of 503141621 is about 795.3593939572.

Adding to 503141621 its reverse (126141305), we get a palindrome (629282926).

The spelling of 503141621 in words is "five hundred three million, one hundred forty-one thousand, six hundred twenty-one".