53515009 has 2 divisors, whose sum is σ = 53515010. Its totient is φ = 53515008.

The previous prime is 53514973. The next prime is 53515013. The reversal of 53515009 is 90051535.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48608784 + 4906225 = 6972^2 + 2215^2 .

It is a cyclic number.

It is not a de Polignac number, because 53515009 - 2⁹ = 53514497 is a prime.

It is not a weakly prime, because it can be changed into another prime (53515069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26757504 + 26757505.

It is an arithmetic number, because the mean of its divisors is an integer number (26757505).

Almost surely, 2^53515009 is an apocalyptic number.

It is an amenable number.

53515009 is a deficient number, since it is larger than the sum of its proper divisors (1).

53515009 is an equidigital number, since it uses as much as digits as its factorization.

53515009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3375, while the sum is 28.

The square root of 53515009 is about 7315.3953413332. The cubic root of 53515009 is about 376.8413355279.

The spelling of 53515009 in words is "fifty-three million, five hundred fifteen thousand, nine".