53657717 has 2 divisors, whose sum is σ = 53657718. Its totient is φ = 53657716.

The previous prime is 53657693. The next prime is 53657749. The reversal of 53657717 is 71775635.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29441476 + 24216241 = 5426^2 + 4921^2 .

It is a cyclic number.

It is not a de Polignac number, because 53657717 - 2¹⁴ = 53641333 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 (53657777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26828858 + 26828859.

It is an arithmetic number, because the mean of its divisors is an integer number (26828859).

Almost surely, 2^53657717 is an apocalyptic number.

It is an amenable number.

53657717 is a deficient number, since it is larger than the sum of its proper divisors (1).

53657717 is an equidigital number, since it uses as much as digits as its factorization.

53657717 is an evil number, because the sum of its binary digits is even.

The product of its digits is 154350, while the sum is 41.

The square root of 53657717 is about 7325.1427972429. The cubic root of 53657717 is about 377.1760113610.

The spelling of 53657717 in words is "fifty-three million, six hundred fifty-seven thousand, seven hundred seventeen".