Search a number
-
+
212159 = 534003
BaseRepresentation
bin110011110010111111
3101210000202
4303302333
523242114
64314115
71542353
oct636277
9353022
10212159
11135442
12a293b
137574c
1457463
1542cde
hex33cbf

212159 has 4 divisors (see below), whose sum is σ = 216216. Its totient is φ = 208104.

The previous prime is 212141. The next prime is 212161. The reversal of 212159 is 951212.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-212159 is a prime.

It is a super-2 number, since 2×2121592 = 90022882562, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 212159.

It is a congruent number.

It is an unprimeable number.

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, 1949 + ... + 2054.

It is an arithmetic number, because the mean of its divisors is an integer number (54054).

2212159 is an apocalyptic number.

212159 is a deficient number, since it is larger than the sum of its proper divisors (4057).

212159 is an equidigital number, since it uses as much as digits as its factorization.

212159 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4056.

The product of its digits is 180, while the sum is 20.

The square root of 212159 is about 460.6072079332. The cubic root of 212159 is about 59.6422226822.

The spelling of 212159 in words is "two hundred twelve thousand, one hundred fifty-nine".

Divisors: 1 53 4003 212159