53161685 has 8 divisors (see below), whose sum is σ = 63876480. Its totient is φ = 42474384.

The previous prime is 53161681. The next prime is 53161687. The reversal of 53161685 is 58616135.

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 53161685 - 2² = 53161681 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53161681) 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, 2345 + ... + 10574.

It is an arithmetic number, because the mean of its divisors is an integer number (7984560).

Almost surely, 2^53161685 is an apocalyptic number.

It is an amenable number.

53161685 is a deficient number, since it is larger than the sum of its proper divisors (10714795).

53161685 is a wasteful number, since it uses less digits than its factorization.

53161685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13747.

The product of its digits is 21600, while the sum is 35.

The square root of 53161685 is about 7291.2060044961. The cubic root of 53161685 is about 376.0101593943.

The spelling of 53161685 in words is "fifty-three million, one hundred sixty-one thousand, six hundred eighty-five".