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57000297 = 319000099
BaseRepresentation
bin1101100101110…
…0000101101001
310222020220201010
43121130011221
5104043002142
65353414133
71261331424
oct331340551
9128226633
1057000297
112a1a2192
121710a349
13ba697b3
1477da9bb
15500de9c
hex365c169

57000297 has 4 divisors (see below), whose sum is σ = 76000400. Its totient is φ = 38000196.

The previous prime is 57000257. The next prime is 57000319. The reversal of 57000297 is 79200075.

It is a happy number.

57000297 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 57000297 - 219 = 56476009 is a prime.

It is a Duffinian number.

57000297 is a modest number, since divided by 297 gives 57 as remainder.

It is not an unprimeable number, because it can be changed into a prime (57000217) 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, 9500047 + ... + 9500052.

It is an arithmetic number, because the mean of its divisors is an integer number (19000100).

Almost surely, 257000297 is an apocalyptic number.

It is an amenable number.

57000297 is a deficient number, since it is larger than the sum of its proper divisors (19000103).

57000297 is a wasteful number, since it uses less digits than its factorization.

57000297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19000102.

The product of its (nonzero) digits is 4410, while the sum is 30.

The square root of 57000297 is about 7549.8541045506. The cubic root of 57000297 is about 384.8507815504.

The spelling of 57000297 in words is "fifty-seven million, two hundred ninety-seven", and thus it is an aban number.

Divisors: 1 3 19000099 57000297