Search a number
-
+
21032273 is a prime number
BaseRepresentation
bin101000000111…
…0110101010001
31110120112212002
41100032311101
520341013043
62030443345
7343525403
oct120166521
943515762
1021032273
1110965949
127063555
134485242
142b16b73
151ca6bb8
hex140ed51

21032273 has 2 divisors, whose sum is σ = 21032274. Its totient is φ = 21032272.

The previous prime is 21032267. The next prime is 21032287. The reversal of 21032273 is 37223012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20866624 + 165649 = 4568^2 + 407^2 .

It is a cyclic number.

It is not a de Polignac number, because 21032273 - 212 = 21028177 is a prime.

It is not a weakly prime, because it can be changed into another prime (21032293) 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 as a sum of consecutive naturals, namely, 10516136 + 10516137.

It is an arithmetic number, because the mean of its divisors is an integer number (10516137).

Almost surely, 221032273 is an apocalyptic number.

It is an amenable number.

21032273 is a deficient number, since it is larger than the sum of its proper divisors (1).

21032273 is an equidigital number, since it uses as much as digits as its factorization.

21032273 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 504, while the sum is 20.

The square root of 21032273 is about 4586.0956160987. The cubic root of 21032273 is about 276.0336766651.

Adding to 21032273 its reverse (37223012), we get a palindrome (58255285).

The spelling of 21032273 in words is "twenty-one million, thirty-two thousand, two hundred seventy-three".