53651 has 4 divisors (see below), whose sum is σ = 57792. Its totient is φ = 49512.

The previous prime is 53639. The next prime is 53653. The reversal of 53651 is 15635.

53651 is digitally balanced in base 2, because in such base 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 a cyclic number.

It is not a de Polignac number, because 53651 - 2¹⁰ = 52627 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 53651.

It is not an unprimeable number, because it can be changed into a prime (53653) 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, 2051 + ... + 2076.

It is an arithmetic number, because the mean of its divisors is an integer number (14448).

2⁵³⁶⁵¹ is an apocalyptic number.

53651 is a deficient number, since it is larger than the sum of its proper divisors (4141).

53651 is a wasteful number, since it uses less digits than its factorization.

53651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4140.

The product of its digits is 450, while the sum is 20.

The square root of 53651 is about 231.6268550924. The cubic root of 53651 is about 37.7160272109.

The spelling of 53651 in words is "fifty-three thousand, six hundred fifty-one".