54691 has 8 divisors (see below), whose sum is σ = 67424. Its totient is φ = 43200.

The previous prime is 54679. The next prime is 54709. The reversal of 54691 is 19645.

54691 is nontrivially palindromic in base 15.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a 6-Lehmer number, since φ(54691) divides (54691-1)⁶.

It is a cyclic number.

It is not a de Polignac number, because 54691 - 2⁷ = 54563 is a prime.

It is a super-2 number, since 2×54691² = 5982210962, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (54601) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 210 + ... + 391.

It is an arithmetic number, because the mean of its divisors is an integer number (8428).

2⁵⁴⁶⁹¹ is an apocalyptic number.

54691 is a deficient number, since it is larger than the sum of its proper divisors (12733).

54691 is a wasteful number, since it uses less digits than its factorization.

54691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 621.

The product of its digits is 1080, while the sum is 25.

The square root of 54691 is about 233.8610698684. The cubic root of 54691 is about 37.9581718882.

The spelling of 54691 in words is "fifty-four thousand, six hundred ninety-one".