Search a number
-
+
36121 = 41881
BaseRepresentation
bin1000110100011001
31211112211
420310121
52123441
6435121
7210211
oct106431
954484
1036121
1125158
1218aa1
1313597
14d241
15aa81
hex8d19

36121 has 4 divisors (see below), whose sum is σ = 37044. Its totient is φ = 35200.

The previous prime is 36109. The next prime is 36131. The reversal of 36121 is 12163.

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 3721 + 32400 = 61^2 + 180^2 .

It is a cyclic number.

It is not a de Polignac number, because 36121 - 27 = 35993 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 400 + ... + 481.

It is an arithmetic number, because the mean of its divisors is an integer number (9261).

236121 is an apocalyptic number.

It is an amenable number.

36121 is a deficient number, since it is larger than the sum of its proper divisors (923).

36121 is an equidigital number, since it uses as much as digits as its factorization.

36121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 922.

The product of its digits is 36, while the sum is 13.

The square root of 36121 is about 190.0552551233. The cubic root of 36121 is about 33.0562249339.

Adding to 36121 its reverse (12163), we get a palindrome (48284).

It can be divided in two parts, 36 and 121, that multiplied together give a square (4356 = 662).

The spelling of 36121 in words is "thirty-six thousand, one hundred twenty-one".

Divisors: 1 41 881 36121