Base | Representation |
---|---|
bin | 1101110100111… |
… | …0001110010111 |
3 | 11001010022012002 |
4 | 3131032032113 |
5 | 104321221322 |
6 | 5430545515 |
7 | 1302632066 |
oct | 335161627 |
9 | 131108162 |
10 | 57992087 |
11 | 2a80a34a |
12 | 1750829b |
13 | c02605a |
14 | 79b81dd |
15 | 5157c92 |
hex | 374e397 |
57992087 has 2 divisors, whose sum is σ = 57992088. Its totient is φ = 57992086.
The previous prime is 57992059. The next prime is 57992089. The reversal of 57992087 is 78029975.
It is a strong prime.
It is a cyclic number.
It is not a de Polignac number, because 57992087 - 220 = 56943511 is a prime.
Together with 57992089, it forms a pair of twin primes.
It is a Chen prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (57992089) by changing a digit.
It is a good prime.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28996043 + 28996044.
It is an arithmetic number, because the mean of its divisors is an integer number (28996044).
Almost surely, 257992087 is an apocalyptic number.
57992087 is a deficient number, since it is larger than the sum of its proper divisors (1).
57992087 is an equidigital number, since it uses as much as digits as its factorization.
57992087 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 317520, while the sum is 47.
The square root of 57992087 is about 7615.2535742416. The cubic root of 57992087 is about 387.0700596720.
The spelling of 57992087 in words is "fifty-seven million, nine hundred ninety-two thousand, eighty-seven".
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