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13212055 = 513671933
BaseRepresentation
bin110010011001…
…100110010111
3220212020112101
4302121212113
511340241210
61151102531
7220205053
oct62314627
926766471
1013212055
11750445a
124511a47
1329778ac
141a7cc63
15125ea3a
hexc99997

13212055 has 8 divisors (see below), whose sum is σ = 15874272. Its totient is φ = 10556448.

The previous prime is 13212053. The next prime is 13212061. The reversal of 13212055 is 55021231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13212055 - 21 = 13212053 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13212053) 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 7 ways as a sum of consecutive naturals, for example, 5869 + ... + 7801.

It is an arithmetic number, because the mean of its divisors is an integer number (1984284).

Almost surely, 213212055 is an apocalyptic number.

13212055 is a deficient number, since it is larger than the sum of its proper divisors (2662217).

13212055 is a wasteful number, since it uses less digits than its factorization.

13212055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3305.

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 13212055 is about 3634.8390610865. The cubic root of 13212055 is about 236.4050725499.

Adding to 13212055 its reverse (55021231), we get a palindrome (68233286).

The spelling of 13212055 in words is "thirteen million, two hundred twelve thousand, fifty-five".

Divisors: 1 5 1367 1933 6835 9665 2642411 13212055