Search a number
-
+
54104681 = 417712953
BaseRepresentation
bin1100111001100…
…1001001101001
310202210210200002
43032121021221
5102322322211
65211352345
71224611411
oct316311151
9122723602
1054104681
11285a4714
12161526b5
13b294807
147285641
154b3b03b
hex3399269

54104681 has 4 divisors (see below), whose sum is σ = 54121812. Its totient is φ = 54087552.

The previous prime is 54104653. The next prime is 54104683. The reversal of 54104681 is 18640145.

54104681 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 27931225 + 26173456 = 5285^2 + 5116^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-54104681 is a prime.

It is a super-2 number, since 2×541046812 = 5854633012223522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54104683) 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 3 ways as a sum of consecutive naturals, for example, 2300 + ... + 10653.

It is an arithmetic number, because the mean of its divisors is an integer number (13530453).

Almost surely, 254104681 is an apocalyptic number.

It is an amenable number.

54104681 is a deficient number, since it is larger than the sum of its proper divisors (17131).

54104681 is a wasteful number, since it uses less digits than its factorization.

54104681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17130.

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 54104681 is about 7355.5884196983. The cubic root of 54104681 is about 378.2203976771.

The spelling of 54104681 in words is "fifty-four million, one hundred four thousand, six hundred eighty-one".

Divisors: 1 4177 12953 54104681