53543423 has 2 divisors, whose sum is σ = 53543424. Its totient is φ = 53543422.

The previous prime is 53543419. The next prime is 53543429. The reversal of 53543423 is 32434535.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 53543423 - 2² = 53543419 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53543429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26771711 + 26771712.

It is an arithmetic number, because the mean of its divisors is an integer number (26771712).

Almost surely, 2^53543423 is an apocalyptic number.

53543423 is a deficient number, since it is larger than the sum of its proper divisors (1).

53543423 is an equidigital number, since it uses as much as digits as its factorization.

53543423 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21600, while the sum is 29.

The square root of 53543423 is about 7317.3371522706. The cubic root of 53543423 is about 376.9080188465.

Adding to 53543423 its reverse (32434535), we get a palindrome (85977958).

The spelling of 53543423 in words is "fifty-three million, five hundred forty-three thousand, four hundred twenty-three".