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52105493 = 1117278639
BaseRepresentation
bin1100011011000…
…1000100010101
310122001020022002
43012301010111
5101314333433
65100445045
71201614026
oct306610425
9118036262
1052105493
11274596a0
1215549785
13aa4486b
146cc4c4d
1548939e8
hex31b1115

52105493 has 8 divisors (see below), whose sum is σ = 60186240. Its totient is φ = 44582080.

The previous prime is 52105483. The next prime is 52105523. The reversal of 52105493 is 39450125.

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 52105493 - 28 = 52105237 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 (52105453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 139133 + ... + 139506.

It is an arithmetic number, because the mean of its divisors is an integer number (7523280).

Almost surely, 252105493 is an apocalyptic number.

It is an amenable number.

52105493 is a deficient number, since it is larger than the sum of its proper divisors (8080747).

52105493 is a wasteful number, since it uses less digits than its factorization.

52105493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278667.

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 52105493 is about 7218.4134683461. The cubic root of 52105493 is about 373.5033514690.

The spelling of 52105493 in words is "fifty-two million, one hundred five thousand, four hundred ninety-three".

Divisors: 1 11 17 187 278639 3065029 4736863 52105493