53487 has 16 divisors (see below), whose sum is σ = 90880. Its totient is φ = 30456.

The previous prime is 53479. The next prime is 53503. The reversal of 53487 is 78435.

It is not a de Polignac number, because 53487 - 2³ = 53479 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a d-powerful number, because it can be written as 5 + 3⁹ + 4⁵ + 8⁵ + 7 .

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 53487.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53407) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48 + ... + 330.

It is an arithmetic number, because the mean of its divisors is an integer number (5680).

2⁵³⁴⁸⁷ is an apocalyptic number.

53487 is the 189-th pentagonal number.

53487 is a deficient number, since it is larger than the sum of its proper divisors (37393).

53487 is a wasteful number, since it uses less digits than its factorization.

53487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299 (or 293 counting only the distinct ones).

The product of its digits is 3360, while the sum is 27.

The square root of 53487 is about 231.2725664665. The cubic root of 53487 is about 37.6775579577.

The spelling of 53487 in words is "fifty-three thousand, four hundred eighty-seven".