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54427509 = 3239715233
BaseRepresentation
bin1100111110011…
…1111101110101
310210102012111200
43033213331311
5102413140014
65222323113
71230424533
oct317477565
9123365450
1054427509
11287a5214
1216289499
13b378736
14732b153
154ba1a09
hex33e7f75

54427509 has 12 divisors (see below), whose sum is σ = 78820716. Its totient is φ = 36191232.

The previous prime is 54427411. The next prime is 54427547. The reversal of 54427509 is 90572445.

It can be written as a sum of positive squares in 2 ways, for example, as 21594609 + 32832900 = 4647^2 + 5730^2 .

It is not a de Polignac number, because 54427509 - 216 = 54361973 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54427579) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4044 + ... + 11189.

It is an arithmetic number, because the mean of its divisors is an integer number (6568393).

Almost surely, 254427509 is an apocalyptic number.

It is an amenable number.

54427509 is a deficient number, since it is larger than the sum of its proper divisors (24393207).

54427509 is a wasteful number, since it uses less digits than its factorization.

54427509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15636 (or 15633 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The square root of 54427509 is about 7377.5001863775. The cubic root of 54427509 is about 378.9711527439.

The spelling of 54427509 in words is "fifty-four million, four hundred twenty-seven thousand, five hundred nine".

Divisors: 1 3 9 397 1191 3573 15233 45699 137097 6047501 18142503 54427509