53685605 has 8 divisors (see below), whose sum is σ = 65994264. Its totient is φ = 41900800.

The previous prime is 53685589. The next prime is 53685607. The reversal of 53685605 is 50658635.

It can be written as a sum of positive squares in 4 ways, for example, as 2505889 + 51179716 = 1583^2 + 7154^2 .

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

It is not a de Polignac number, because 53685605 - 2⁴ = 53685589 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 (53685607) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 130736 + ... + 131145.

It is an arithmetic number, because the mean of its divisors is an integer number (8249283).

Almost surely, 2^53685605 is an apocalyptic number.

It is an amenable number.

53685605 is a deficient number, since it is larger than the sum of its proper divisors (12308659).

53685605 is a wasteful number, since it uses less digits than its factorization.

53685605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261927.

The product of its (nonzero) digits is 108000, while the sum is 38.

The square root of 53685605 is about 7327.0461306041. The cubic root of 53685605 is about 377.2413443854.

The spelling of 53685605 in words is "fifty-three million, six hundred eighty-five thousand, six hundred five".