503403053 has 2 divisors, whose sum is σ = 503403054. Its totient is φ = 503403052.

The previous prime is 503403013. The next prime is 503403067. The reversal of 503403053 is 350304305.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 390576169 + 112826884 = 19763^2 + 10622^2 .

It is a cyclic number.

It is not a de Polignac number, because 503403053 - 2⁶ = 503402989 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 (503403013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 251701526 + 251701527.

It is an arithmetic number, because the mean of its divisors is an integer number (251701527).

Almost surely, 2^503403053 is an apocalyptic number.

It is an amenable number.

503403053 is a deficient number, since it is larger than the sum of its proper divisors (1).

503403053 is an equidigital number, since it uses as much as digits as its factorization.

503403053 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2700, while the sum is 23.

The square root of 503403053 is about 22436.6453151981. The cubic root of 503403053 is about 795.4971261483.

Adding to 503403053 its reverse (350304305), we get a palindrome (853707358).

The spelling of 503403053 in words is "five hundred three million, four hundred three thousand, fifty-three".