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57709141 = 78244163
BaseRepresentation
bin1101110000100…
…1001001010101
311000120221001121
43130021021111
5104233143031
65420523541
71300343140
oct334111125
9130527047
1057709141
112a636806
12173b05b1
13bc57329
147943057
1550ee011
hex3709255

57709141 has 4 divisors (see below), whose sum is σ = 65953312. Its totient is φ = 49464972.

The previous prime is 57709129. The next prime is 57709151. The reversal of 57709141 is 14190775.

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 a cyclic number.

It is not a de Polignac number, because 57709141 - 211 = 57707093 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 57709097 and 57709106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57709121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4122075 + ... + 4122088.

It is an arithmetic number, because the mean of its divisors is an integer number (16488328).

Almost surely, 257709141 is an apocalyptic number.

It is an amenable number.

57709141 is a deficient number, since it is larger than the sum of its proper divisors (8244171).

57709141 is an equidigital number, since it uses as much as digits as its factorization.

57709141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8244170.

The product of its (nonzero) digits is 8820, while the sum is 34.

The square root of 57709141 is about 7596.6532762790. The cubic root of 57709141 is about 386.4395223424.

The spelling of 57709141 in words is "fifty-seven million, seven hundred nine thousand, one hundred forty-one".

Divisors: 1 7 8244163 57709141