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55065493 = 761128959
BaseRepresentation
bin1101001000001…
…1101110010101
310211121121122201
43102003232111
5103044043433
65244124501
71236022540
oct322035625
9124547581
1055065493
11290a057a
1216536731
13b53cc42
147455857
154c7aa7d
hex3483b95

55065493 has 8 divisors (see below), whose sum is σ = 63964160. Its totient is φ = 46424880.

The previous prime is 55065487. The next prime is 55065497. The reversal of 55065493 is 39456055.

55065493 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 55065493 - 29 = 55064981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55065497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64053 + ... + 64906.

It is an arithmetic number, because the mean of its divisors is an integer number (7995520).

Almost surely, 255065493 is an apocalyptic number.

It is an amenable number.

55065493 is a deficient number, since it is larger than the sum of its proper divisors (8898667).

55065493 is a wasteful number, since it uses less digits than its factorization.

55065493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129027.

The product of its (nonzero) digits is 81000, while the sum is 37.

The square root of 55065493 is about 7420.6127105516. The cubic root of 55065493 is about 380.4461357546.

The spelling of 55065493 in words is "fifty-five million, sixty-five thousand, four hundred ninety-three".

Divisors: 1 7 61 427 128959 902713 7866499 55065493