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12552641 = 23261389
BaseRepresentation
bin101111111000…
…100111000001
3212121201222122
4233320213001
511203141031
61125014025
7211460423
oct57704701
925551878
1012552641
1170a3a92
124254315
1327a66ca
14194a813
15117e47b
hexbf89c1

12552641 has 12 divisors (see below), whose sum is σ = 13371540. Its totient is φ = 11779680.

The previous prime is 12552637. The next prime is 12552667. The reversal of 12552641 is 14625521.

It can be written as a sum of positive squares in 2 ways, for example, as 1430416 + 11122225 = 1196^2 + 3335^2 .

It is not a de Polignac number, because 12552641 - 22 = 12552637 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12552641.

It is not an unprimeable number, because it can be changed into a prime (12552611) 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 11 ways as a sum of consecutive naturals, for example, 32075 + ... + 32463.

It is an arithmetic number, because the mean of its divisors is an integer number (1114295).

Almost surely, 212552641 is an apocalyptic number.

It is an amenable number.

12552641 is a deficient number, since it is larger than the sum of its proper divisors (818899).

12552641 is an equidigital number, since it uses as much as digits as its factorization.

12552641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 496 (or 473 counting only the distinct ones).

The product of its digits is 2400, while the sum is 26.

The square root of 12552641 is about 3542.9706462233. The cubic root of 12552641 is about 232.4047692623.

The spelling of 12552641 in words is "twelve million, five hundred fifty-two thousand, six hundred forty-one".

Divisors: 1 23 61 389 529 1403 8947 23729 32269 205781 545767 12552641