53305717 has 2 divisors, whose sum is σ = 53305718. Its totient is φ = 53305716.

The previous prime is 53305657. The next prime is 53305723. The reversal of 53305717 is 71750335.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38452401 + 14853316 = 6201^2 + 3854^2 .

It is a cyclic number.

It is not a de Polignac number, because 53305717 - 2⁷ = 53305589 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53305787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26652858 + 26652859.

It is an arithmetic number, because the mean of its divisors is an integer number (26652859).

Almost surely, 2^53305717 is an apocalyptic number.

It is an amenable number.

53305717 is a deficient number, since it is larger than the sum of its proper divisors (1).

53305717 is an equidigital number, since it uses as much as digits as its factorization.

53305717 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11025, while the sum is 31.

The square root of 53305717 is about 7301.0764274866. The cubic root of 53305717 is about 376.3494304236.

The spelling of 53305717 in words is "fifty-three million, three hundred five thousand, seven hundred seventeen".