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54326645 = 517639137
BaseRepresentation
bin1100111100111…
…1010101110101
310210020002010222
43033033111311
5102401423040
65220224125
71226524502
oct317172565
9123202128
1054326645
112873645a
121623b045
13b341859
1473024a9
154b81bb5
hex33cf575

54326645 has 8 divisors (see below), whose sum is σ = 69026904. Its totient is φ = 40904704.

The previous prime is 54326639. The next prime is 54326647. The reversal of 54326645 is 54662345.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 23435281 + 30891364 = 4841^2 + 5558^2 .

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 54326645 - 214 = 54310261 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54326647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 319484 + ... + 319653.

It is an arithmetic number, because the mean of its divisors is an integer number (8628363).

Almost surely, 254326645 is an apocalyptic number.

It is an amenable number.

54326645 is a deficient number, since it is larger than the sum of its proper divisors (14700259).

54326645 is a wasteful number, since it uses less digits than its factorization.

54326645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 639159.

The product of its digits is 86400, while the sum is 35.

The square root of 54326645 is about 7370.6610965367. The cubic root of 54326645 is about 378.7369073306.

It can be divided in two parts, 54 and 326645, that multiplied together give a triangular number (17638830 = T5939).

The spelling of 54326645 in words is "fifty-four million, three hundred twenty-six thousand, six hundred forty-five".

Divisors: 1 5 17 85 639137 3195685 10865329 54326645