56605 has 4 divisors (see below), whose sum is σ = 67932. Its totient is φ = 45280.

The previous prime is 56599. The next prime is 56611. The reversal of 56605 is 50665.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50665 = 5 ⋅10133.

It is an interprime number because it is at equal distance from previous prime (56599) and next prime (56611).

It can be written as a sum of positive squares in 2 ways, for example, as 11236 + 45369 = 106^2 + 213^2 .

It is not a de Polignac number, because 56605 - 2³ = 56597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5656 + ... + 5665.

It is an arithmetic number, because the mean of its divisors is an integer number (16983).

2⁵⁶⁶⁰⁵ is an apocalyptic number.

It is an amenable number.

56605 is a deficient number, since it is larger than the sum of its proper divisors (11327).

56605 is a wasteful number, since it uses less digits than its factorization.

56605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11326.

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 56605 is about 237.9180531191. The cubic root of 56605 is about 38.3959070435.

It can be divided in two parts, 5660 and 5, that added together give a palindrome (5665).

The spelling of 56605 in words is "fifty-six thousand, six hundred five".