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130655443 = 155384131
BaseRepresentation
bin1111100100110…
…10010011010011
3100002211222120111
413302122103103
5231421433233
620544222151
73144360442
oct762322323
9302758514
10130655443
116782a406
123790a957
13210b7c19
14134d0d59
15b70cacd
hex7c9a4d3

130655443 has 4 divisors (see below), whose sum is σ = 130741128. Its totient is φ = 130569760.

The previous prime is 130655431. The next prime is 130655461. The reversal of 130655443 is 344556031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 344556031 = 2314980697.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-130655443 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (130655423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40513 + ... + 43618.

It is an arithmetic number, because the mean of its divisors is an integer number (32685282).

Almost surely, 2130655443 is an apocalyptic number.

130655443 is a deficient number, since it is larger than the sum of its proper divisors (85685).

130655443 is an equidigital number, since it uses as much as digits as its factorization.

130655443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85684.

The product of its (nonzero) digits is 21600, while the sum is 31.

The square root of 130655443 is about 11430.4611892959. The cubic root of 130655443 is about 507.4296446105.

The spelling of 130655443 in words is "one hundred thirty million, six hundred fifty-five thousand, four hundred forty-three".

Divisors: 1 1553 84131 130655443