53440609 has 2 divisors, whose sum is σ = 53440610. Its totient is φ = 53440608.

The previous prime is 53440573. The next prime is 53440613. The reversal of 53440609 is 90604435.

53440609 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., 52519009 + 921600 = 7247^2 + 960^2 .

It is a cyclic number.

It is not a de Polignac number, because 53440609 - 2⁷ = 53440481 is a prime.

It is not a weakly prime, because it can be changed into another prime (53440669) 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, 26720304 + 26720305.

It is an arithmetic number, because the mean of its divisors is an integer number (26720305).

Almost surely, 2^53440609 is an apocalyptic number.

It is an amenable number.

53440609 is a deficient number, since it is larger than the sum of its proper divisors (1).

53440609 is an equidigital number, since it uses as much as digits as its factorization.

53440609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 53440609 is about 7310.3084066269. The cubic root of 53440609 is about 376.6666181986. Note that the first 4 decimals are identical.

The spelling of 53440609 in words is "fifty-three million, four hundred forty thousand, six hundred nine".