54651 has 4 divisors (see below), whose sum is σ = 72872. Its totient is φ = 36432.

The previous prime is 54647. The next prime is 54667. The reversal of 54651 is 15645.

It is a happy number.

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

It is not a de Polignac number, because 54651 - 2² = 54647 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 (54601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9106 + ... + 9111.

It is an arithmetic number, because the mean of its divisors is an integer number (18218).

2⁵⁴⁶⁵¹ is an apocalyptic number.

54651 is a deficient number, since it is larger than the sum of its proper divisors (18221).

54651 is a wasteful number, since it uses less digits than its factorization.

54651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18220.

The product of its digits is 600, while the sum is 21.

The square root of 54651 is about 233.7755333648. The cubic root of 54651 is about 37.9489156597.

It can be divided in two parts, 5 and 4651, that added together give a triangular number (4656 = T₉₆).

The spelling of 54651 in words is "fifty-four thousand, six hundred fifty-one".