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56160565 = 561184133
BaseRepresentation
bin1101011000111…
…1000100110101
310220200020210221
43112033010311
5103334114230
65323414341
71251233266
oct326170465
9126606727
1056160565
112977929a
12169843b1
13b834506
14765c96d
154de527a
hex358f135

56160565 has 8 divisors (see below), whose sum is σ = 68497848. Its totient is φ = 44191680.

The previous prime is 56160557. The next prime is 56160569. The reversal of 56160565 is 56506165.

It can be written as a sum of positive squares in 4 ways, for example, as 1887876 + 54272689 = 1374^2 + 7367^2 .

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

It is not a de Polignac number, because 56160565 - 23 = 56160557 is a prime.

It is a super-2 number, since 2×561605652 = 6308018122238450, which contains 22 as substring.

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 56160565.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56160569) 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, 91762 + ... + 92371.

It is an arithmetic number, because the mean of its divisors is an integer number (8562231).

Almost surely, 256160565 is an apocalyptic number.

It is an amenable number.

56160565 is a deficient number, since it is larger than the sum of its proper divisors (12337283).

56160565 is a wasteful number, since it uses less digits than its factorization.

56160565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184199.

The product of its (nonzero) digits is 27000, while the sum is 34.

The square root of 56160565 is about 7494.0352948195. The cubic root of 56160565 is about 382.9515421563.

The spelling of 56160565 in words is "fifty-six million, one hundred sixty thousand, five hundred sixty-five".

Divisors: 1 5 61 305 184133 920665 11232113 56160565