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13252261 = 114725633
BaseRepresentation
bin110010100011…
…011010100101
3220221021200111
4302203122211
511343033021
61152013021
7220433221
oct62433245
926837614
1013252261
117531690
124531171
13298cc99
141a8d781
15126b8e1
hexca36a5

13252261 has 8 divisors (see below), whose sum is σ = 14765184. Its totient is φ = 11790720.

The previous prime is 13252259. The next prime is 13252273. The reversal of 13252261 is 16225231.

13252261 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 13252261 - 21 = 13252259 is a prime.

It is a super-2 number, since 2×132522612 = 351244843224242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13252661) 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, 12300 + ... + 13333.

It is an arithmetic number, because the mean of its divisors is an integer number (1845648).

Almost surely, 213252261 is an apocalyptic number.

13252261 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

13252261 is a deficient number, since it is larger than the sum of its proper divisors (1512923).

13252261 is a wasteful number, since it uses less digits than its factorization.

13252261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25691.

The product of its digits is 720, while the sum is 22.

The square root of 13252261 is about 3640.3655036273. The cubic root of 13252261 is about 236.6446334929.

Adding to 13252261 its reverse (16225231), we get a palindrome (29477492).

The spelling of 13252261 in words is "thirteen million, two hundred fifty-two thousand, two hundred sixty-one".

Divisors: 1 11 47 517 25633 281963 1204751 13252261