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130520054 = 279322861
BaseRepresentation
bin1111100011110…
…01001111110110
3100002121002212002
413301321033312
5231403120204
620541255302
73143254640
oct761711766
9302532762
10130520054
1167747715
1237864532
132106b402
1413497890
15b6d291e
hex7c793f6

130520054 has 8 divisors (see below), whose sum is σ = 223748688. Its totient is φ = 55937160.

The previous prime is 130520029. The next prime is 130520077. The reversal of 130520054 is 450025031.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4661417 + ... + 4661444.

It is an arithmetic number, because the mean of its divisors is an integer number (27968586).

Almost surely, 2130520054 is an apocalyptic number.

130520054 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

130520054 is a deficient number, since it is larger than the sum of its proper divisors (93228634).

130520054 is an equidigital number, since it uses as much as digits as its factorization.

130520054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9322870.

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 130520054 is about 11424.5373648126. The cubic root of 130520054 is about 507.2543128779.

Adding to 130520054 its reverse (450025031), we get a palindrome (580545085).

The spelling of 130520054 in words is "one hundred thirty million, five hundred twenty thousand, fifty-four".

Divisors: 1 2 7 14 9322861 18645722 65260027 130520054