53685757 has 8 divisors (see below), whose sum is σ = 55661400. Its totient is φ = 51718464.

The previous prime is 53685739. The next prime is 53685761. The reversal of 53685757 is 75758635.

It can be written as a sum of positive squares in 4 ways, for example, as 3644281 + 50041476 = 1909^2 + 7074^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 53685757 - 2¹¹ = 53683709 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53685257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12943 + ... + 16579.

It is an arithmetic number, because the mean of its divisors is an integer number (6957675).

Almost surely, 2^53685757 is an apocalyptic number.

It is an amenable number.

53685757 is a deficient number, since it is larger than the sum of its proper divisors (1975643).

53685757 is a wasteful number, since it uses less digits than its factorization.

53685757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4175.

The product of its digits is 882000, while the sum is 46.

The square root of 53685757 is about 7327.0565031259. The cubic root of 53685757 is about 377.2417004127.

The spelling of 53685757 in words is "fifty-three million, six hundred eighty-five thousand, seven hundred fifty-seven".