Base | Representation |
---|---|
bin | 1001100110101… |
… | …10011011001001 |
3 | 12121121101100012 |
4 | 10303112123021 |
5 | 131111220212 |
6 | 11554521305 |
7 | 1665556061 |
oct | 463263311 |
9 | 177541305 |
10 | 80570057 |
11 | 41530527 |
12 | 22b96235 |
13 | 138cc9b9 |
14 | a9b43a1 |
15 | 7117922 |
hex | 4cd66c9 |
80570057 has 2 divisors, whose sum is σ = 80570058. Its totient is φ = 80570056.
The previous prime is 80570041. The next prime is 80570059. The reversal of 80570057 is 75007508.
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 71503936 + 9066121 = 8456^2 + 3011^2 .
It is a cyclic number.
It is not a de Polignac number, because 80570057 - 24 = 80570041 is a prime.
Together with 80570059, it forms a pair of twin primes.
It is a Chen prime.
It is not a weakly prime, because it can be changed into another prime (80570059) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40285028 + 40285029.
It is an arithmetic number, because the mean of its divisors is an integer number (40285029).
Almost surely, 280570057 is an apocalyptic number.
It is an amenable number.
80570057 is a deficient number, since it is larger than the sum of its proper divisors (1).
80570057 is an equidigital number, since it uses as much as digits as its factorization.
80570057 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 9800, while the sum is 32.
The square root of 80570057 is about 8976.0824973927. The cubic root of 80570057 is about 431.9079754401.
The spelling of 80570057 in words is "eighty million, five hundred seventy thousand, fifty-seven".
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