53306503 has 2 divisors, whose sum is σ = 53306504. Its totient is φ = 53306502.

The previous prime is 53306471. The next prime is 53306527. The reversal of 53306503 is 30560335.

53306503 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 53306503 - 2⁵ = 53306471 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53306573) 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, 26653251 + 26653252.

It is an arithmetic number, because the mean of its divisors is an integer number (26653252).

Almost surely, 2^53306503 is an apocalyptic number.

53306503 is a deficient number, since it is larger than the sum of its proper divisors (1).

53306503 is an equidigital number, since it uses as much as digits as its factorization.

53306503 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4050, while the sum is 25.

The square root of 53306503 is about 7301.1302549674. The cubic root of 53306503 is about 376.3512801889.

Adding to 53306503 its reverse (30560335), we get a palindrome (83866838).

The spelling of 53306503 in words is "fifty-three million, three hundred six thousand, five hundred three".