53738809 has 2 divisors, whose sum is σ = 53738810. Its totient is φ = 53738808.

The previous prime is 53738771. The next prime is 53738851. The reversal of 53738809 is 90883735.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28387584 + 25351225 = 5328^2 + 5035^2 .

It is a cyclic number.

It is not a de Polignac number, because 53738809 - 2⁹ = 53738297 is a prime.

It is not a weakly prime, because it can be changed into another prime (53738609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26869404 + 26869405.

It is an arithmetic number, because the mean of its divisors is an integer number (26869405).

Almost surely, 2^53738809 is an apocalyptic number.

It is an amenable number.

53738809 is a deficient number, since it is larger than the sum of its proper divisors (1).

53738809 is an equidigital number, since it uses as much as digits as its factorization.

53738809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 181440, while the sum is 43.

The square root of 53738809 is about 7330.6758897117. The cubic root of 53738809 is about 377.3659222985.

The spelling of 53738809 in words is "fifty-three million, seven hundred thirty-eight thousand, eight hundred nine".