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395161 = 13113269
BaseRepresentation
bin1100000011110011001
3202002001121
41200132121
5100121121
612245241
73234034
oct1403631
9662047
10395161
1124a988
12170821
1310ab30
14a401b
157c141
hex60799

395161 has 8 divisors (see below), whose sum is σ = 430920. Its totient is φ = 360192.

The previous prime is 395159. The next prime is 395173. The reversal of 395161 is 161593.

395161 = 4442 + 4452.

It can be written as a sum of positive squares in 4 ways, for example, as 57600 + 337561 = 240^2 + 581^2 .

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 395161 - 21 = 395159 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 (395111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1335 + ... + 1603.

It is an arithmetic number, because the mean of its divisors is an integer number (53865).

2395161 is an apocalyptic number.

395161 is the 445-th centered square number.

It is an amenable number.

395161 is a deficient number, since it is larger than the sum of its proper divisors (35759).

395161 is a wasteful number, since it uses less digits than its factorization.

395161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 395.

The product of its digits is 810, while the sum is 25.

The square root of 395161 is about 628.6183261726. The cubic root of 395161 is about 73.3823065897.

The spelling of 395161 in words is "three hundred ninety-five thousand, one hundred sixty-one".

Divisors: 1 13 113 269 1469 3497 30397 395161