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57093137 = 531139533
BaseRepresentation
bin1101100111001…
…0110000010001
310222102122001122
43121302300101
5104103440022
65355412025
71262166203
oct331626021
9128378048
1057093137
112a255a12
1217154015
13ba9cb2a
147822773
15502b742
hex3672c11

57093137 has 8 divisors (see below), whose sum is σ = 58691304. Its totient is φ = 55514368.

The previous prime is 57093131. The next prime is 57093151. The reversal of 57093137 is 73139075.

It is a Cunningham number, because it is equal to 75562+1.

It can be written as a sum of positive squares in 4 ways, for example, as 1 + 57093136 = 1^2 + 7556^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 57093137 - 28 = 57092881 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 57093097 and 57093106.

It is not an unprimeable number, because it can be changed into a prime (57093131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1223 + ... + 10755.

It is an arithmetic number, because the mean of its divisors is an integer number (7336413).

Almost surely, 257093137 is an apocalyptic number.

It is an amenable number.

57093137 is a deficient number, since it is larger than the sum of its proper divisors (1598167).

57093137 is a wasteful number, since it uses less digits than its factorization.

57093137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9699.

The product of its (nonzero) digits is 19845, while the sum is 35.

The square root of 57093137 is about 7556.0000661726. Note that the first 4 decimals coincide. The cubic root of 57093137 is about 385.0596118410.

The spelling of 57093137 in words is "fifty-seven million, ninety-three thousand, one hundred thirty-seven".

Divisors: 1 53 113 5989 9533 505249 1077229 57093137