54985 has 8 divisors (see below), whose sum is σ = 75456. Its totient is φ = 37680.

The previous prime is 54983. The next prime is 55001. The reversal of 54985 is 58945.

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

It is not a de Polignac number, because 54985 - 2¹ = 54983 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (54983) 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, 751 + ... + 820.

It is an arithmetic number, because the mean of its divisors is an integer number (9432).

2⁵⁴⁹⁸⁵ is an apocalyptic number.

It is an amenable number.

54985 is a deficient number, since it is larger than the sum of its proper divisors (20471).

54985 is a wasteful number, since it uses less digits than its factorization.

54985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1583.

The product of its digits is 7200, while the sum is 31.

The square root of 54985 is about 234.4888057030. The cubic root of 54985 is about 38.0260670638.

It can be divided in two parts, 549 and 85, that multiplied together give a triangular number (46665 = T₃₀₅).

The spelling of 54985 in words is "fifty-four thousand, nine hundred eighty-five".