53989823 has 2 divisors, whose sum is σ = 53989824. Its totient is φ = 53989822.

The previous prime is 53989783. The next prime is 53989829. The reversal of 53989823 is 32898935.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 53989823 - 2⁸ = 53989567 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53989829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26994911 + 26994912.

It is an arithmetic number, because the mean of its divisors is an integer number (26994912).

Almost surely, 2^53989823 is an apocalyptic number.

53989823 is a deficient number, since it is larger than the sum of its proper divisors (1).

53989823 is an equidigital number, since it uses as much as digits as its factorization.

53989823 is an evil number, because the sum of its binary digits is even.

The product of its digits is 466560, while the sum is 47.

The square root of 53989823 is about 7347.7767385788. The cubic root of 53989823 is about 377.9525686312.

The spelling of 53989823 in words is "fifty-three million, nine hundred eighty-nine thousand, eight hundred twenty-three".