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13255507 = 31427597
BaseRepresentation
bin110010100100…
…001101010011
3220221110010201
4302210031103
511343134012
61152040031
7220445536
oct62441523
926843121
1013255507
117534071
124533017
1329915c5
141a90a1d
15126c857
hexca4353

13255507 has 4 divisors (see below), whose sum is σ = 13683136. Its totient is φ = 12827880.

The previous prime is 13255499. The next prime is 13255511. The reversal of 13255507 is 70555231.

13255507 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13255507 - 23 = 13255499 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13255537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 213768 + ... + 213829.

It is an arithmetic number, because the mean of its divisors is an integer number (3420784).

Almost surely, 213255507 is an apocalyptic number.

13255507 is a deficient number, since it is larger than the sum of its proper divisors (427629).

13255507 is an equidigital number, since it uses as much as digits as its factorization.

13255507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 427628.

The product of its (nonzero) digits is 5250, while the sum is 28.

The square root of 13255507 is about 3640.8113106834. The cubic root of 13255507 is about 236.6639531087.

The spelling of 13255507 in words is "thirteen million, two hundred fifty-five thousand, five hundred seven".

Divisors: 1 31 427597 13255507