53687 has 4 divisors (see below), whose sum is σ = 55176. Its totient is φ = 52200.

The previous prime is 53681. The next prime is 53693. The reversal of 53687 is 78635.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78635 = 5 ⋅15727.

It is an interprime number because it is at equal distance from previous prime (53681) and next prime (53693).

It is a cyclic number.

It is not a de Polignac number, because 53687 - 2⁶ = 53623 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 53687.

It is not an unprimeable number, because it can be changed into a prime (53681) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 689 + ... + 762.

It is an arithmetic number, because the mean of its divisors is an integer number (13794).

2⁵³⁶⁸⁷ is an apocalyptic number.

53687 is a deficient number, since it is larger than the sum of its proper divisors (1489).

53687 is a wasteful number, since it uses less digits than its factorization.

53687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1488.

The product of its digits is 5040, while the sum is 29.

The square root of 53687 is about 231.7045532569. The cubic root of 53687 is about 37.7244611848.

The spelling of 53687 in words is "fifty-three thousand, six hundred eighty-seven".