53633989 has 2 divisors, whose sum is σ = 53633990. Its totient is φ = 53633988.

The previous prime is 53633939. The next prime is 53634013. The reversal of 53633989 is 98933635.

53633989 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26936100 + 26697889 = 5190^2 + 5167^2 .

It is a cyclic number.

It is not a de Polignac number, because 53633989 - 2⁹ = 53633477 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53633939) 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, 26816994 + 26816995.

It is an arithmetic number, because the mean of its divisors is an integer number (26816995).

Almost surely, 2^53633989 is an apocalyptic number.

It is an amenable number.

53633989 is a deficient number, since it is larger than the sum of its proper divisors (1).

53633989 is an equidigital number, since it uses as much as digits as its factorization.

53633989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 524880, while the sum is 46.

The square root of 53633989 is about 7323.5229910201. The cubic root of 53633989 is about 377.1204061133.

The spelling of 53633989 in words is "fifty-three million, six hundred thirty-three thousand, nine hundred eighty-nine".