53765009 has 2 divisors, whose sum is σ = 53765010. Its totient is φ = 53765008.

The previous prime is 53764979. The next prime is 53765017. The reversal of 53765009 is 90056735.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50452609 + 3312400 = 7103^2 + 1820^2 .

It is a cyclic number.

It is not a de Polignac number, because 53765009 - 2¹⁶ = 53699473 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 53765009.

It is not a weakly prime, because it can be changed into another prime (53765029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26882504 + 26882505.

It is an arithmetic number, because the mean of its divisors is an integer number (26882505).

Almost surely, 2^53765009 is an apocalyptic number.

It is an amenable number.

53765009 is a deficient number, since it is larger than the sum of its proper divisors (1).

53765009 is an equidigital number, since it uses as much as digits as its factorization.

53765009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28350, while the sum is 35.

The square root of 53765009 is about 7332.4626831645. The cubic root of 53765009 is about 377.4272397523.

The spelling of 53765009 in words is "fifty-three million, seven hundred sixty-five thousand, nine".