53657693 has 2 divisors, whose sum is σ = 53657694. Its totient is φ = 53657692.

The previous prime is 53657671. The next prime is 53657717. The reversal of 53657693 is 39675635.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33605209 + 20052484 = 5797^2 + 4478^2 .

It is a cyclic number.

It is not a de Polignac number, because 53657693 - 2⁶ = 53657629 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53657293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26828846 + 26828847.

It is an arithmetic number, because the mean of its divisors is an integer number (26828847).

Almost surely, 2^53657693 is an apocalyptic number.

It is an amenable number.

53657693 is a deficient number, since it is larger than the sum of its proper divisors (1).

53657693 is an equidigital number, since it uses as much as digits as its factorization.

53657693 is an evil number, because the sum of its binary digits is even.

The product of its digits is 510300, while the sum is 44.

The square root of 53657693 is about 7325.1411590494. The cubic root of 53657693 is about 377.1759551266.

The spelling of 53657693 in words is "fifty-three million, six hundred fifty-seven thousand, six hundred ninety-three".