53543899 has 2 divisors, whose sum is σ = 53543900. Its totient is φ = 53543898.

The previous prime is 53543891. The next prime is 53543911. The reversal of 53543899 is 99834535.

It is a happy number.

53543899 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 not a de Polignac number, because 53543899 - 2³ = 53543891 is a prime.

It is not a weakly prime, because it can be changed into another prime (53543891) 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, 26771949 + 26771950.

It is an arithmetic number, because the mean of its divisors is an integer number (26771950).

Almost surely, 2^53543899 is an apocalyptic number.

53543899 is a deficient number, since it is larger than the sum of its proper divisors (1).

53543899 is an equidigital number, since it uses as much as digits as its factorization.

53543899 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 583200, while the sum is 46.

The square root of 53543899 is about 7317.3696776916. The cubic root of 53543899 is about 376.9091357449.

The spelling of 53543899 in words is "fifty-three million, five hundred forty-three thousand, eight hundred ninety-nine".