53444609 has 2 divisors, whose sum is σ = 53444610. Its totient is φ = 53444608.

The previous prime is 53444597. The next prime is 53444623. The reversal of 53444609 is 90644435.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42289009 + 11155600 = 6503^2 + 3340^2 .

It is a cyclic number.

It is not a de Polignac number, because 53444609 - 2⁸ = 53444353 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (53444639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26722304 + 26722305.

It is an arithmetic number, because the mean of its divisors is an integer number (26722305).

It is a Proth number, since it is equal to 1631 ⋅ 2¹⁵ + 1 and 1631 < 2¹⁵.

Almost surely, 2^53444609 is an apocalyptic number.

It is an amenable number.

53444609 is a deficient number, since it is larger than the sum of its proper divisors (1).

53444609 is an equidigital number, since it uses as much as digits as its factorization.

53444609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 51840, while the sum is 35.

The square root of 53444609 is about 7310.5819877763. The cubic root of 53444609 is about 376.6760157267.

The spelling of 53444609 in words is "fifty-three million, four hundred forty-four thousand, six hundred nine".