56549 has 4 divisors (see below), whose sum is σ = 57036. Its totient is φ = 56064.

The previous prime is 56543. The next prime is 56569. The reversal of 56549 is 94565.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 94565 = 5 ⋅18913.

It can be written as a sum of positive squares in 2 ways, for example, as 36100 + 20449 = 190^2 + 143^2 .

It is a cyclic number.

It is not a de Polignac number, because 56549 - 2⁴ = 56533 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 6.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56543) 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, 47 + ... + 339.

It is an arithmetic number, because the mean of its divisors is an integer number (14259).

2⁵⁶⁵⁴⁹ is an apocalyptic number.

It is an amenable number.

56549 is a deficient number, since it is larger than the sum of its proper divisors (487).

56549 is a wasteful number, since it uses less digits than its factorization.

56549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 486.

The product of its digits is 5400, while the sum is 29.

The square root of 56549 is about 237.8003364169. The cubic root of 56549 is about 38.3832410231.

The spelling of 56549 in words is "fifty-six thousand, five hundred forty-nine".