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445345311 = 3178732261
BaseRepresentation
bin11010100010110…
…110111000011111
31011000222212220210
4122202312320133
51403002022221
6112105143503
714015241555
oct3242667037
91130885823
10445345311
11209427584
1210518ab93
137135a148
1443209bd5
152916e276
hex1a8b6e1f

445345311 has 8 divisors (see below), whose sum is σ = 628722864. Its totient is φ = 279432320.

The previous prime is 445345301. The next prime is 445345331. The reversal of 445345311 is 113543544.

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 445345311 - 26 = 445345247 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (445345301) 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, 4366080 + ... + 4366181.

It is an arithmetic number, because the mean of its divisors is an integer number (78590358).

Almost surely, 2445345311 is an apocalyptic number.

445345311 is a deficient number, since it is larger than the sum of its proper divisors (183377553).

445345311 is a wasteful number, since it uses less digits than its factorization.

445345311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8732281.

The product of its digits is 14400, while the sum is 30.

The square root of 445345311 is about 21103.2061782090. The cubic root of 445345311 is about 763.6580977722.

Adding to 445345311 its reverse (113543544), we get a palindrome (558888855).

The spelling of 445345311 in words is "four hundred forty-five million, three hundred forty-five thousand, three hundred eleven".

Divisors: 1 3 17 51 8732261 26196783 148448437 445345311