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13052345 = 517153557
BaseRepresentation
bin110001110010…
…100110111001
3220120010110012
4301302212321
511320133340
61143431305
7215641325
oct61624671
926503405
1013052345
117405469
124455535
13291cca7
141a3a985
15122c565
hexc729b9

13052345 has 8 divisors (see below), whose sum is σ = 16584264. Its totient is φ = 9827584.

The previous prime is 13052341. The next prime is 13052383. The reversal of 13052345 is 54325031.

It can be written as a sum of positive squares in 4 ways, for example, as 6661561 + 6390784 = 2581^2 + 2528^2 .

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 13052345 - 22 = 13052341 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 13052345.

It is not an unprimeable number, because it can be changed into a prime (13052341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76694 + ... + 76863.

It is an arithmetic number, because the mean of its divisors is an integer number (2073033).

Almost surely, 213052345 is an apocalyptic number.

It is an amenable number.

13052345 is a deficient number, since it is larger than the sum of its proper divisors (3531919).

13052345 is a wasteful number, since it uses less digits than its factorization.

13052345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153579.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 13052345 is about 3612.8029284753. The cubic root of 13052345 is about 235.4486374554.

Adding to 13052345 its reverse (54325031), we get a palindrome (67377376).

The spelling of 13052345 in words is "thirteen million, fifty-two thousand, three hundred forty-five".

Divisors: 1 5 17 85 153557 767785 2610469 13052345