53558009 has 2 divisors, whose sum is σ = 53558010. Its totient is φ = 53558008.

The previous prime is 53557997. The next prime is 53558047. The reversal of 53558009 is 90085535.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32809984 + 20748025 = 5728^2 + 4555^2 .

It is a cyclic number.

It is not a de Polignac number, because 53558009 - 2⁴ = 53557993 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 53558009.

It is not a weakly prime, because it can be changed into another prime (53558209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26779004 + 26779005.

It is an arithmetic number, because the mean of its divisors is an integer number (26779005).

Almost surely, 2^53558009 is an apocalyptic number.

It is an amenable number.

53558009 is a deficient number, since it is larger than the sum of its proper divisors (1).

53558009 is an equidigital number, since it uses as much as digits as its factorization.

53558009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27000, while the sum is 35.

The square root of 53558009 is about 7318.3337584453. Note that the first 3 decimals coincide. The cubic root of 53558009 is about 376.9422407978.

The spelling of 53558009 in words is "fifty-three million, five hundred fifty-eight thousand, nine".