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57112197 = 31723181269
BaseRepresentation
bin1101100111011…
…1011010000101
310222110121012120
43121313122011
5104110042242
65400040153
71262305602
oct331673205
9128417176
1057112197
112a26926a
1217163059
13baa86cc
1478296a9
1550321ec
hex3677685

57112197 has 32 divisors (see below), whose sum is σ = 84913920. Its totient is φ = 33960960.

The previous prime is 57112193. The next prime is 57112219. The reversal of 57112197 is 79121175.

It is not a de Polignac number, because 57112197 - 22 = 57112193 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57112193) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 212179 + ... + 212447.

It is an arithmetic number, because the mean of its divisors is an integer number (2653560).

Almost surely, 257112197 is an apocalyptic number.

It is an amenable number.

57112197 is a deficient number, since it is larger than the sum of its proper divisors (27801723).

57112197 is a wasteful number, since it uses less digits than its factorization.

57112197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 493.

The product of its digits is 4410, while the sum is 33.

The square root of 57112197 is about 7557.2612102534. The cubic root of 57112197 is about 385.1024565683.

The spelling of 57112197 in words is "fifty-seven million, one hundred twelve thousand, one hundred ninety-seven".

Divisors: 1 3 17 23 51 69 181 269 391 543 807 1173 3077 4163 4573 6187 9231 12489 13719 18561 48689 70771 105179 146067 212313 315537 827713 1119847 2483139 3359541 19037399 57112197