53417809 has 2 divisors, whose sum is σ = 53417810. Its totient is φ = 53417808.

The previous prime is 53417737. The next prime is 53417831. The reversal of 53417809 is 90871435.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39727809 + 13690000 = 6303^2 + 3700^2 .

It is a cyclic number.

It is not a de Polignac number, because 53417809 - 2⁹ = 53417297 is a prime.

It is not a weakly prime, because it can be changed into another prime (53417849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26708904 + 26708905.

It is an arithmetic number, because the mean of its divisors is an integer number (26708905).

Almost surely, 2^53417809 is an apocalyptic number.

It is an amenable number.

53417809 is a deficient number, since it is larger than the sum of its proper divisors (1).

53417809 is an equidigital number, since it uses as much as digits as its factorization.

53417809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 53417809 is about 7308.7487985291. The cubic root of 53417809 is about 376.6130433318.

The spelling of 53417809 in words is "fifty-three million, four hundred seventeen thousand, eight hundred nine".