53897609 has 2 divisors, whose sum is σ = 53897610. Its totient is φ = 53897608.

The previous prime is 53897603. The next prime is 53897653. The reversal of 53897609 is 90679835.

53897609 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 can be written as a sum of positive squares in only one way, i.e., 53699584 + 198025 = 7328^2 + 445^2 .

It is a cyclic number.

It is not a de Polignac number, because 53897609 - 2⁸ = 53897353 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (53897603) 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, 26948804 + 26948805.

It is an arithmetic number, because the mean of its divisors is an integer number (26948805).

Almost surely, 2^53897609 is an apocalyptic number.

It is an amenable number.

53897609 is a deficient number, since it is larger than the sum of its proper divisors (1).

53897609 is an equidigital number, since it uses as much as digits as its factorization.

53897609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 408240, while the sum is 47.

The square root of 53897609 is about 7341.4990975958. The cubic root of 53897609 is about 377.7372664524.

The spelling of 53897609 in words is "fifty-three million, eight hundred ninety-seven thousand, six hundred nine".