53645623 has 2 divisors, whose sum is σ = 53645624. Its totient is φ = 53645622.

The previous prime is 53645617. The next prime is 53645633. The reversal of 53645623 is 32654635.

53645623 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53645623 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53645633) 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, 26822811 + 26822812.

It is an arithmetic number, because the mean of its divisors is an integer number (26822812).

Almost surely, 2^53645623 is an apocalyptic number.

53645623 is a deficient number, since it is larger than the sum of its proper divisors (1).

53645623 is an equidigital number, since it uses as much as digits as its factorization.

53645623 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 64800, while the sum is 34.

The square root of 53645623 is about 7324.3172378045. The cubic root of 53645623 is about 377.1476717937.

The spelling of 53645623 in words is "fifty-three million, six hundred forty-five thousand, six hundred twenty-three".