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56005 = 523487
BaseRepresentation
bin1101101011000101
32211211021
431223011
53243010
61111141
7322165
oct155305
984737
1056005
1139094
12284b1
131c651
14165a5
15118da
hexdac5

56005 has 8 divisors (see below), whose sum is σ = 70272. Its totient is φ = 42768.

The previous prime is 56003. The next prime is 56009. The reversal of 56005 is 50065.

Subtracting from 56005 its product of nonzero digits (150), we obtain a palindrome (55855).

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 56005 - 21 = 56003 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 56005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56003) 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, 129 + ... + 358.

It is an arithmetic number, because the mean of its divisors is an integer number (8784).

256005 is an apocalyptic number.

It is an amenable number.

56005 is a deficient number, since it is larger than the sum of its proper divisors (14267).

56005 is a wasteful number, since it uses less digits than its factorization.

56005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 515.

The product of its (nonzero) digits is 150, while the sum is 16.

The square root of 56005 is about 236.6537555164. The cubic root of 56005 is about 38.2597622711.

The spelling of 56005 in words is "fifty-six thousand, five".

Divisors: 1 5 23 115 487 2435 11201 56005