503403054461 has 2 divisors, whose sum is σ = 503403054462. Its totient is φ = 503403054460.

The previous prime is 503403054449. The next prime is 503403054463. The reversal of 503403054461 is 164450304305.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 397196155225 + 106206899236 = 630235^2 + 325894^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-503403054461 is a prime.

Together with 503403054463, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (503403054463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 251701527230 + 251701527231.

It is an arithmetic number, because the mean of its divisors is an integer number (251701527231).

Almost surely, 2^503403054461 is an apocalyptic number.

It is an amenable number.

503403054461 is a deficient number, since it is larger than the sum of its proper divisors (1).

503403054461 is an equidigital number, since it uses as much as digits as its factorization.

503403054461 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 86400, while the sum is 35.

Adding to 503403054461 its reverse (164450304305), we get a palindrome (667853358766).

The spelling of 503403054461 in words is "five hundred three billion, four hundred three million, fifty-four thousand, four hundred sixty-one".