213545201 has 8 divisors (see below), whose sum is σ = 217278504. Its totient is φ = 209819520.

The previous prime is 213545197. The next prime is 213545203. The reversal of 213545201 is 102545312.

It can be written as a sum of positive squares in 4 ways, for example, as 54760000 + 158785201 = 7400^2 + 12601^2 .

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 213545201 - 2² = 213545197 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213545203) 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, 105935 + ... + 107931.

It is an arithmetic number, because the mean of its divisors is an integer number (27159813).

Almost surely, 2^213545201 is an apocalyptic number.

It is an amenable number.

213545201 is a deficient number, since it is larger than the sum of its proper divisors (3733303).

213545201 is a wasteful number, since it uses less digits than its factorization.

213545201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3811.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 213545201 is about 14613.1858607218. The cubic root of 213545201 is about 597.7183725881.

The spelling of 213545201 in words is "two hundred thirteen million, five hundred forty-five thousand, two hundred one".