53205623 has 2 divisors, whose sum is σ = 53205624. Its totient is φ = 53205622.

The previous prime is 53205619. The next prime is 53205637. The reversal of 53205623 is 32650235.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 53205623 - 2² = 53205619 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 53205592 and 53205601.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53205613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26602811 + 26602812.

It is an arithmetic number, because the mean of its divisors is an integer number (26602812).

Almost surely, 2^53205623 is an apocalyptic number.

53205623 is a deficient number, since it is larger than the sum of its proper divisors (1).

53205623 is an equidigital number, since it uses as much as digits as its factorization.

53205623 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5400, while the sum is 26.

The square root of 53205623 is about 7294.2184639617. The cubic root of 53205623 is about 376.1137213544.

Adding to 53205623 its reverse (32650235), we get a palindrome (85855858).

The spelling of 53205623 in words is "fifty-three million, two hundred five thousand, six hundred twenty-three".