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56530 = 255653
BaseRepresentation
bin1101110011010010
32212112201
431303102
53302110
61113414
7323545
oct156322
985481
1056530
1139521
122886a
131c966
141685c
1511b3a
hexdcd2

56530 has 8 divisors (see below), whose sum is σ = 101772. Its totient is φ = 22608.

The previous prime is 56527. The next prime is 56531. The reversal of 56530 is 3565.

It can be written as a sum of positive squares in 2 ways, for example, as 56169 + 361 = 237^2 + 19^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 56498 and 56507.

It is not an unprimeable number, because it can be changed into a prime (56531) 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, 2817 + ... + 2836.

256530 is an apocalyptic number.

56530 is a deficient number, since it is larger than the sum of its proper divisors (45242).

56530 is a wasteful number, since it uses less digits than its factorization.

56530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5660.

The product of its (nonzero) digits is 450, while the sum is 19.

The square root of 56530 is about 237.7603835798. The cubic root of 56530 is about 38.3789417236.

It can be divided in two parts, 565 and 30, that added together give a palindrome (595).

The spelling of 56530 in words is "fifty-six thousand, five hundred thirty".

Divisors: 1 2 5 10 5653 11306 28265 56530