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13551061 = 31259239
BaseRepresentation
bin110011101100…
…010111010101
3221111110120011
4303230113111
511432113221
61202240221
7223116316
oct63542725
927443504
1013551061
117716127
124656071
132a65ca4
141b2a60d
1512ca1e1
hexcec5d5

13551061 has 12 divisors (see below), whose sum is σ = 14299200. Its totient is φ = 12837720.

The previous prime is 13551059. The next prime is 13551067. The reversal of 13551061 is 16015531.

It is not a de Polignac number, because 13551061 - 21 = 13551059 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 (13551067) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 56580 + ... + 56818.

It is an arithmetic number, because the mean of its divisors is an integer number (1191600).

Almost surely, 213551061 is an apocalyptic number.

It is an amenable number.

13551061 is a deficient number, since it is larger than the sum of its proper divisors (748139).

13551061 is an equidigital number, since it uses as much as digits as its factorization.

13551061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360 (or 329 counting only the distinct ones).

The product of its (nonzero) digits is 450, while the sum is 22.

The square root of 13551061 is about 3681.1765782152. The cubic root of 13551061 is about 238.4099811614.

Adding to 13551061 its reverse (16015531), we get a palindrome (29566592).

The spelling of 13551061 in words is "thirteen million, five hundred fifty-one thousand, sixty-one".

Divisors: 1 31 59 239 961 1829 7409 14101 56699 229679 437131 13551061