53787 has 4 divisors (see below), whose sum is σ = 71720. Its totient is φ = 35856.

The previous prime is 53783. The next prime is 53791. The reversal of 53787 is 78735.

53787 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (53783) and next prime (53791).

It is not a de Polignac number, because 53787 - 2² = 53783 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53783) 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, 8962 + ... + 8967.

It is an arithmetic number, because the mean of its divisors is an integer number (17930).

2⁵³⁷⁸⁷ is an apocalyptic number.

53787 is a deficient number, since it is larger than the sum of its proper divisors (17933).

53787 is a wasteful number, since it uses less digits than its factorization.

53787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17932.

The product of its digits is 5880, while the sum is 30.

The square root of 53787 is about 231.9202449119. The cubic root of 53787 is about 37.7478691252.

The spelling of 53787 in words is "fifty-three thousand, seven hundred eighty-seven".