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57093871 = 173358463
BaseRepresentation
bin1101100111001…
…0111011101111
310222102200001211
43121302323233
5104104000441
65355415251
71262201302
oct331627357
9128380054
1057093871
112a25651a
1217154527
13baa0273
147822b39
15502ba81
hex3672eef

57093871 has 4 divisors (see below), whose sum is σ = 60452352. Its totient is φ = 53735392.

The previous prime is 57093863. The next prime is 57093893. The reversal of 57093871 is 17839075.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 57093871 - 23 = 57093863 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57093821) 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, 1679215 + ... + 1679248.

It is an arithmetic number, because the mean of its divisors is an integer number (15113088).

Almost surely, 257093871 is an apocalyptic number.

57093871 is a deficient number, since it is larger than the sum of its proper divisors (3358481).

57093871 is a wasteful number, since it uses less digits than its factorization.

57093871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3358480.

The product of its (nonzero) digits is 52920, while the sum is 40.

The square root of 57093871 is about 7556.0486366884. The cubic root of 57093871 is about 385.0612619667.

The spelling of 57093871 in words is "fifty-seven million, ninety-three thousand, eight hundred seventy-one".

Divisors: 1 17 3358463 57093871