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13252553 = 41323233
BaseRepresentation
bin110010100011…
…011111001001
3220221022002022
4302203133021
511343040203
61152014225
7220434116
oct62433711
926838068
1013252553
117531926
124531375
132990162
141a8d90d
15126ba38
hexca37c9

13252553 has 4 divisors (see below), whose sum is σ = 13575828. Its totient is φ = 12929280.

The previous prime is 13252529. The next prime is 13252559. The reversal of 13252553 is 35525231.

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

It can be written as a sum of positive squares in 2 ways, for example, as 5004169 + 8248384 = 2237^2 + 2872^2 .

It is a cyclic number.

It is not a de Polignac number, because 13252553 - 26 = 13252489 is a prime.

It is a super-2 number, since 2×132525532 = 351260322035618, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13252559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 161576 + ... + 161657.

It is an arithmetic number, because the mean of its divisors is an integer number (3393957).

Almost surely, 213252553 is an apocalyptic number.

It is an amenable number.

13252553 is a deficient number, since it is larger than the sum of its proper divisors (323275).

13252553 is an equidigital number, since it uses as much as digits as its factorization.

13252553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323274.

The product of its digits is 4500, while the sum is 26.

The square root of 13252553 is about 3640.4056092694. The cubic root of 13252553 is about 236.6463715542.

Adding to 13252553 its reverse (35525231), we get a palindrome (48777784).

The spelling of 13252553 in words is "thirteen million, two hundred fifty-two thousand, five hundred fifty-three".

Divisors: 1 41 323233 13252553