53503123 has 2 divisors, whose sum is σ = 53503124. Its totient is φ = 53503122.

The previous prime is 53503081. The next prime is 53503157. The reversal of 53503123 is 32130535.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 53503123 - 2⁹ = 53502611 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 53503094 and 53503103.

It is not a weakly prime, because it can be changed into another prime (53503523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26751561 + 26751562.

It is an arithmetic number, because the mean of its divisors is an integer number (26751562).

Almost surely, 2^53503123 is an apocalyptic number.

53503123 is a deficient number, since it is larger than the sum of its proper divisors (1).

53503123 is an equidigital number, since it uses as much as digits as its factorization.

53503123 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 53503123 is about 7314.5828999335. The cubic root of 53503123 is about 376.8134338990.

Adding to 53503123 its reverse (32130535), we get a palindrome (85633658).

The spelling of 53503123 in words is "fifty-three million, five hundred three thousand, one hundred twenty-three".