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57706271 = 724725057
BaseRepresentation
bin1101110000100…
…0011100011111
311000120210010022
43130020130133
5104233100041
65420502355
71300331600
oct334103437
9130523108
1057706271
112a634637
12173aa9bb
13bc55c2c
147941da7
1550ed24b
hex370871f

57706271 has 12 divisors (see below), whose sum is σ = 68558688. Its totient is φ = 48408192.

The previous prime is 57706237. The next prime is 57706289. The reversal of 57706271 is 17260775.

It is not a de Polignac number, because 57706271 - 222 = 53511967 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57756271) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10226 + ... + 14831.

It is an arithmetic number, because the mean of its divisors is an integer number (5713224).

Almost surely, 257706271 is an apocalyptic number.

57706271 is a deficient number, since it is larger than the sum of its proper divisors (10852417).

57706271 is a wasteful number, since it uses less digits than its factorization.

57706271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25118 (or 25111 counting only the distinct ones).

The product of its (nonzero) digits is 20580, while the sum is 35.

The square root of 57706271 is about 7596.4643749576. The cubic root of 57706271 is about 386.4331160793.

The spelling of 57706271 in words is "fifty-seven million, seven hundred six thousand, two hundred seventy-one".

Divisors: 1 7 47 49 329 2303 25057 175399 1177679 1227793 8243753 57706271