Search a number
-
+
212530201 = 1397168541
BaseRepresentation
bin11001010101011…
…11010000011001
3112210220122121221
430222233100121
5413401431301
633031132041
75160322402
oct1452572031
9483818557
10212530201
11a9a710a4
125b214021
1335053720
14203249a9
15139d1da1
hexcaaf419

212530201 has 8 divisors (see below), whose sum is σ = 231239624. Its totient is φ = 194158080.

The previous prime is 212530177. The next prime is 212530211. The reversal of 212530201 is 102035212.

212530201 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 51265600 + 161264601 = 7160^2 + 12699^2 .

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 212530201 - 29 = 212529689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212530211) 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, 83010 + ... + 85531.

It is an arithmetic number, because the mean of its divisors is an integer number (28904953).

Almost surely, 2212530201 is an apocalyptic number.

It is an amenable number.

212530201 is a deficient number, since it is larger than the sum of its proper divisors (18709423).

212530201 is a wasteful number, since it uses less digits than its factorization.

212530201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168651.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 212530201 is about 14578.4155860642. The cubic root of 212530201 is about 596.7698647311.

Adding to 212530201 its reverse (102035212), we get a palindrome (314565413).

The spelling of 212530201 in words is "two hundred twelve million, five hundred thirty thousand, two hundred one".

Divisors: 1 13 97 1261 168541 2191033 16348477 212530201