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115416481 = 550120981
BaseRepresentation
bin1101110000100…
…01110110100001
322001011202122111
412320101312201
5214021311411
615241435321
72601011125
oct670216641
9261152574
10115416481
115a171124
123279bb41
131abb089b
1411485585
15a1ec721
hex6e11da1

115416481 has 4 divisors (see below), whose sum is σ = 115442964. Its totient is φ = 115390000.

The previous prime is 115416439. The next prime is 115416493. The reversal of 115416481 is 184614511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 184614511 = 400746073.

It can be written as a sum of positive squares in 2 ways, for example, as 92948881 + 22467600 = 9641^2 + 4740^2 .

It is a cyclic number.

It is not a de Polignac number, because 115416481 - 213 = 115408289 is a prime.

It is a super-2 number, since 2×1154164812 = 26641928172846722, which contains 22 as substring.

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 (115416401) 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, 4990 + ... + 15991.

It is an arithmetic number, because the mean of its divisors is an integer number (28860741).

Almost surely, 2115416481 is an apocalyptic number.

It is an amenable number.

115416481 is a deficient number, since it is larger than the sum of its proper divisors (26483).

115416481 is an equidigital number, since it uses as much as digits as its factorization.

115416481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26482.

The product of its digits is 3840, while the sum is 31.

The square root of 115416481 is about 10743.2062718725. The cubic root of 115416481 is about 486.8807562366.

The spelling of 115416481 in words is "one hundred fifteen million, four hundred sixteen thousand, four hundred eighty-one".

Divisors: 1 5501 20981 115416481