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54190689 = 372580509
BaseRepresentation
bin1100111010111…
…0001001100001
310202222011122120
43032232021201
5102333100224
65213254453
71225420230
oct316561141
9122864576
1054190689
11286532a3
1216194429
13b2c49c7
1472a8b17
154b56779
hex33ae261

54190689 has 8 divisors (see below), whose sum is σ = 82576320. Its totient is φ = 30966096.

The previous prime is 54190687. The next prime is 54190709. The reversal of 54190689 is 98609145.

54190689 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 not a de Polignac number, because 54190689 - 21 = 54190687 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 54190689.

It is not an unprimeable number, because it can be changed into a prime (54190687) 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, 1290234 + ... + 1290275.

It is an arithmetic number, because the mean of its divisors is an integer number (10322040).

Almost surely, 254190689 is an apocalyptic number.

It is an amenable number.

54190689 is a deficient number, since it is larger than the sum of its proper divisors (28385631).

54190689 is a wasteful number, since it uses less digits than its factorization.

54190689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2580519.

The product of its (nonzero) digits is 77760, while the sum is 42.

The square root of 54190689 is about 7361.4325372172. The cubic root of 54190689 is about 378.4207054100.

The spelling of 54190689 in words is "fifty-four million, one hundred ninety thousand, six hundred eighty-nine".

Divisors: 1 3 7 21 2580509 7741527 18063563 54190689