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57201189 = 319067063
BaseRepresentation
bin1101101000110…
…1001000100101
310222122010021120
43122031020211
5104120414224
65402004153
71263126213
oct332151045
9128563246
1057201189
112a31a111
12171a6659
13bb0a076
14784dcb3
15504d779
hex368d225

57201189 has 4 divisors (see below), whose sum is σ = 76268256. Its totient is φ = 38134124.

The previous prime is 57201187. The next prime is 57201197. The reversal of 57201189 is 98110275.

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 57201189 - 21 = 57201187 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57201187) 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, 9533529 + ... + 9533534.

It is an arithmetic number, because the mean of its divisors is an integer number (19067064).

Almost surely, 257201189 is an apocalyptic number.

It is an amenable number.

57201189 is a deficient number, since it is larger than the sum of its proper divisors (19067067).

57201189 is a wasteful number, since it uses less digits than its factorization.

57201189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19067066.

The product of its (nonzero) digits is 5040, while the sum is 33.

The square root of 57201189 is about 7563.1467657318. The cubic root of 57201189 is about 385.3023744765.

The spelling of 57201189 in words is "fifty-seven million, two hundred one thousand, one hundred eighty-nine".

Divisors: 1 3 19067063 57201189