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13522141 = 67201823
BaseRepresentation
bin110011100101…
…010011011101
3221102222220001
4303211103131
511430202031
61201454301
7222636103
oct63452335
927388801
1013522141
1176a6426
124641391
132a55a89
141b1dc73
1512c1861
hexce54dd

13522141 has 4 divisors (see below), whose sum is σ = 13724032. Its totient is φ = 13320252.

The previous prime is 13522133. The next prime is 13522147. The reversal of 13522141 is 14122531.

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, and also an emirpimes, since its reverse is a distinct semiprime: 14122531 = 24175843.

It is a cyclic number.

It is not a de Polignac number, because 13522141 - 23 = 13522133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13522147) 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, 100845 + ... + 100978.

It is an arithmetic number, because the mean of its divisors is an integer number (3431008).

Almost surely, 213522141 is an apocalyptic number.

It is an amenable number.

13522141 is a deficient number, since it is larger than the sum of its proper divisors (201891).

13522141 is an equidigital number, since it uses as much as digits as its factorization.

13522141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201890.

The product of its digits is 240, while the sum is 19.

The square root of 13522141 is about 3677.2463882639. The cubic root of 13522141 is about 238.2402594612.

Adding to 13522141 its reverse (14122531), we get a palindrome (27644672).

The spelling of 13522141 in words is "thirteen million, five hundred twenty-two thousand, one hundred forty-one".

Divisors: 1 67 201823 13522141