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14352521 = 20397039
BaseRepresentation
bin110110110000…
…000010001001
31000000011221212
4312300002021
512133240041
61231342505
7232665041
oct66600211
930004855
1014352521
118113297
124981a35
132c86a21
141c98721
1513d78eb
hexdb0089

14352521 has 4 divisors (see below), whose sum is σ = 14361600. Its totient is φ = 14343444.

The previous prime is 14352511. The next prime is 14352563. The reversal of 14352521 is 12525341.

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 a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 12525341 = 43291287.

It is a cyclic number.

It is not a de Polignac number, because 14352521 - 214 = 14336137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (14352511) 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, 1481 + ... + 5558.

It is an arithmetic number, because the mean of its divisors is an integer number (3590400).

Almost surely, 214352521 is an apocalyptic number.

It is an amenable number.

14352521 is a deficient number, since it is larger than the sum of its proper divisors (9079).

14352521 is an equidigital number, since it uses as much as digits as its factorization.

14352521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9078.

The product of its digits is 1200, while the sum is 23.

The square root of 14352521 is about 3788.4721194698. The cubic root of 14352521 is about 243.0203994232.

Adding to 14352521 its reverse (12525341), we get a palindrome (26877862).

The spelling of 14352521 in words is "fourteen million, three hundred fifty-two thousand, five hundred twenty-one".

Divisors: 1 2039 7039 14352521