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13325569 = 17978081
BaseRepresentation
bin110010110101…
…010100000001
3221002000020121
4302311110001
511402404234
61153340241
7221160025
oct62652401
927060217
1013325569
117581774
124567681
1329b746a
141aac385
1512834b4
hexcb5501

13325569 has 8 divisors (see below), whose sum is σ = 14256648. Its totient is φ = 12410880.

The previous prime is 13325561. The next prime is 13325573. The reversal of 13325569 is 96552331.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2356225 + 10969344 = 1535^2 + 3312^2 .

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 13325569 - 23 = 13325561 is a prime.

It is a super-2 number, since 2×133255692 = 355141578347522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13325561) 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, 2392 + ... + 5689.

It is an arithmetic number, because the mean of its divisors is an integer number (1782081).

Almost surely, 213325569 is an apocalyptic number.

It is an amenable number.

13325569 is a deficient number, since it is larger than the sum of its proper divisors (931079).

13325569 is an equidigital number, since it uses as much as digits as its factorization.

13325569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8195.

The product of its digits is 24300, while the sum is 34.

The square root of 13325569 is about 3650.4203867500. The cubic root of 13325569 is about 237.0801831866.

The spelling of 13325569 in words is "thirteen million, three hundred twenty-five thousand, five hundred sixty-nine".

Divisors: 1 17 97 1649 8081 137377 783857 13325569