Search a number
-
+
130551181 = 239954419
BaseRepresentation
bin1111100100000…
…00110110001101
3100002122200112221
413302000312031
5231410114211
620542055341
73143444455
oct762006615
9302580487
10130551181
1167769042
123787a551
132107c627
14134a4d65
15b6dbc71
hex7c80d8d

130551181 has 4 divisors (see below), whose sum is σ = 130608000. Its totient is φ = 130494364.

The previous prime is 130551167. The next prime is 130551191. The reversal of 130551181 is 181155031.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 130551181 - 25 = 130551149 is a prime.

It is a super-2 number, since 2×1305511812 = 34087221720989522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130551191) 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 3 ways as a sum of consecutive naturals, for example, 24811 + ... + 29608.

It is an arithmetic number, because the mean of its divisors is an integer number (32652000).

Almost surely, 2130551181 is an apocalyptic number.

It is an amenable number.

130551181 is a deficient number, since it is larger than the sum of its proper divisors (56819).

130551181 is an equidigital number, since it uses as much as digits as its factorization.

130551181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56818.

The product of its (nonzero) digits is 600, while the sum is 25.

The square root of 130551181 is about 11425.8995707121. The cubic root of 130551181 is about 507.2946337571.

The spelling of 130551181 in words is "one hundred thirty million, five hundred fifty-one thousand, one hundred eighty-one".

Divisors: 1 2399 54419 130551181