503410421 has 2 divisors, whose sum is σ = 503410422. Its totient is φ = 503410420.

The previous prime is 503410403. The next prime is 503410429. The reversal of 503410421 is 124014305.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 417180625 + 86229796 = 20425^2 + 9286^2 .

It is a cyclic number.

It is not a de Polignac number, because 503410421 - 2²⁶ = 436301557 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 503410393 and 503410402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (503410429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 251705210 + 251705211.

It is an arithmetic number, because the mean of its divisors is an integer number (251705211).

Almost surely, 2^503410421 is an apocalyptic number.

It is an amenable number.

503410421 is a deficient number, since it is larger than the sum of its proper divisors (1).

503410421 is an equidigital number, since it uses as much as digits as its factorization.

503410421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 503410421 is about 22436.8095102668. The cubic root of 503410421 is about 795.5010071963.

Adding to 503410421 its reverse (124014305), we get a palindrome (627424726).

The spelling of 503410421 in words is "five hundred three million, four hundred ten thousand, four hundred twenty-one".