503653 has 2 divisors, whose sum is σ = 503654. Its totient is φ = 503652.

The previous prime is 503647. The next prime is 503663. The reversal of 503653 is 356305.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 471969 + 31684 = 687^2 + 178^2 .

It is a cyclic number.

It is not a de Polignac number, because 503653 - 2⁵ = 503621 is a prime.

503653 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (503623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 251826 + 251827.

It is an arithmetic number, because the mean of its divisors is an integer number (251827).

2⁵⁰³⁶⁵³ is an apocalyptic number.

It is an amenable number.

503653 is a deficient number, since it is larger than the sum of its proper divisors (1).

503653 is an equidigital number, since it uses as much as digits as its factorization.

503653 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1350, while the sum is 22.

The square root of 503653 is about 709.6851414536. The cubic root of 503653 is about 79.5628763028.

Adding to 503653 its reverse (356305), we get a palindrome (859958).

It can be divided in two parts, 503 and 653, that added together give a square (1156 = 34²).

The spelling of 503653 in words is "five hundred three thousand, six hundred fifty-three".