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6105145 = 51221029
BaseRepresentation
bin10111010010100000111001
3102111011200111
4113102200321
53030331040
6334504321
7102615154
oct27224071
912434614
106105145
11349a982
1220650a1
131359b17
14b4cc9b
15808dea
hex5d2839

6105145 has 4 divisors (see below), whose sum is σ = 7326180. Its totient is φ = 4884112.

The previous prime is 6105101. The next prime is 6105149. The reversal of 6105145 is 5415016.

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 4875264 + 1229881 = 2208^2 + 1109^2 .

It is a cyclic number.

It is not a de Polignac number, because 6105145 - 215 = 6072377 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (6105149) 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 3 ways as a sum of consecutive naturals, for example, 610510 + ... + 610519.

It is an arithmetic number, because the mean of its divisors is an integer number (1831545).

Almost surely, 26105145 is an apocalyptic number.

It is an amenable number.

6105145 is a deficient number, since it is larger than the sum of its proper divisors (1221035).

6105145 is a wasteful number, since it uses less digits than its factorization.

6105145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1221034.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 6105145 is about 2470.8591623158. The cubic root of 6105145 is about 182.7673694085.

The spelling of 6105145 in words is "six million, one hundred five thousand, one hundred forty-five".

Divisors: 1 5 1221029 6105145