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130178053 = 731783261
BaseRepresentation
bin1111100001001…
…01110000000101
3100001221201201101
413300211300011
5231311144203
620530100101
73140331565
oct760456005
9301851641
10130178053
1167533775
123771a631
1320c7b845
1413408da5
15b66641d
hex7c25c05

130178053 has 4 divisors (see below), whose sum is σ = 131961388. Its totient is φ = 128394720.

The previous prime is 130178051. The next prime is 130178057. The reversal of 130178053 is 350871031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 350871031 = 750124433.

It can be written as a sum of positive squares in 2 ways, for example, as 47858724 + 82319329 = 6918^2 + 9073^2 .

It is a cyclic number.

It is not a de Polignac number, because 130178053 - 21 = 130178051 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 (130178051) 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, 891558 + ... + 891703.

It is an arithmetic number, because the mean of its divisors is an integer number (32990347).

Almost surely, 2130178053 is an apocalyptic number.

It is an amenable number.

130178053 is a deficient number, since it is larger than the sum of its proper divisors (1783335).

130178053 is an equidigital number, since it uses as much as digits as its factorization.

130178053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1783334.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 130178053 is about 11409.5597198139. The cubic root of 130178053 is about 506.8108734163.

The spelling of 130178053 in words is "one hundred thirty million, one hundred seventy-eight thousand, fifty-three".

Divisors: 1 73 1783261 130178053