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13130555 = 56143051
BaseRepresentation
bin110010000101…
…101100111011
3220201002201212
4302011230323
511330134210
61145233335
7216415334
oct62055473
926632655
1013130555
1174591a9
12449284b
132949779
141a5b28b
151245805
hexc85b3b

13130555 has 8 divisors (see below), whose sum is σ = 16015344. Its totient is φ = 10332000.

The previous prime is 13130549. The next prime is 13130561. The reversal of 13130555 is 55503131.

It is an interprime number because it is at equal distance from previous prime (13130549) and next prime (13130561).

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

It is not a de Polignac number, because 13130555 - 218 = 12868411 is a prime.

It is a super-2 number, since 2×131305552 = 344822949216050, which contains 22 as substring.

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 13130555.

It is an unprimeable number.

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, 21221 + ... + 21830.

It is an arithmetic number, because the mean of its divisors is an integer number (2001918).

Almost surely, 213130555 is an apocalyptic number.

13130555 is a deficient number, since it is larger than the sum of its proper divisors (2884789).

13130555 is an equidigital number, since it uses as much as digits as its factorization.

13130555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43117.

The product of its (nonzero) digits is 1125, while the sum is 23.

The square root of 13130555 is about 3623.6107682807. The cubic root of 13130555 is about 235.9179727856.

Adding to 13130555 its reverse (55503131), we get a palindrome (68633686).

The spelling of 13130555 in words is "thirteen million, one hundred thirty thousand, five hundred fifty-five".

Divisors: 1 5 61 305 43051 215255 2626111 13130555