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13252657 = 111204787
BaseRepresentation
bin110010100011…
…100000110001
3220221022020011
4302203200301
511343041112
61152014521
7220434325
oct62434061
926838204
1013252657
117531a10
124531441
132990212
141a8d985
15126baa7
hexca3831

13252657 has 4 divisors (see below), whose sum is σ = 14457456. Its totient is φ = 12047860.

The previous prime is 13252627. The next prime is 13252661. The reversal of 13252657 is 75625231.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 13252657 - 27 = 13252529 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13252627) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 602383 + ... + 602404.

It is an arithmetic number, because the mean of its divisors is an integer number (3614364).

Almost surely, 213252657 is an apocalyptic number.

It is an amenable number.

13252657 is a deficient number, since it is larger than the sum of its proper divisors (1204799).

13252657 is a wasteful number, since it uses less digits than its factorization.

13252657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1204798.

The product of its digits is 12600, while the sum is 31.

The square root of 13252657 is about 3640.4198933640. The cubic root of 13252657 is about 236.6469905836.

Adding to 13252657 its reverse (75625231), we get a palindrome (88877888).

The spelling of 13252657 in words is "thirteen million, two hundred fifty-two thousand, six hundred fifty-seven".

Divisors: 1 11 1204787 13252657