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54238189 = 313747287
BaseRepresentation
bin1100111011100…
…1101111101101
310210001120210211
43032321233231
5102341110224
65214302421
71226005555
oct316715755
9123046724
1054238189
1128685a55
12161b7a11
13b310505
1472bc165
154b65894
hex33b9bed

54238189 has 8 divisors (see below), whose sum is σ = 57502208. Its totient is φ = 51068880.

The previous prime is 54238159. The next prime is 54238199. The reversal of 54238189 is 98183245.

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

It is not a de Polignac number, because 54238189 - 25 = 54238157 is a prime.

It is a super-2 number, since 2×542381892 = 5883562291999442, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54238139) 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, 22497 + ... + 24790.

It is an arithmetic number, because the mean of its divisors is an integer number (7187776).

Almost surely, 254238189 is an apocalyptic number.

It is an amenable number.

54238189 is a deficient number, since it is larger than the sum of its proper divisors (3264019).

54238189 is a wasteful number, since it uses less digits than its factorization.

54238189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47355.

The product of its digits is 69120, while the sum is 40.

The square root of 54238189 is about 7364.6581047595. The cubic root of 54238189 is about 378.5312393689.

The spelling of 54238189 in words is "fifty-four million, two hundred thirty-eight thousand, one hundred eighty-nine".

Divisors: 1 31 37 1147 47287 1465897 1749619 54238189