213532601 has 4 divisors (see below), whose sum is σ = 217561572. Its totient is φ = 209503632.

The previous prime is 213532589. The next prime is 213532607. The reversal of 213532601 is 106235312.

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 147598201 + 65934400 = 12149^2 + 8120^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213532601 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (213532607) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2014406 + ... + 2014511.

It is an arithmetic number, because the mean of its divisors is an integer number (54390393).

Almost surely, 2^213532601 is an apocalyptic number.

It is an amenable number.

213532601 is a deficient number, since it is larger than the sum of its proper divisors (4028971).

213532601 is an equidigital number, since it uses as much as digits as its factorization.

213532601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4028970.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 213532601 is about 14612.7547368729. The cubic root of 213532601 is about 597.7066164516.

Adding to 213532601 its reverse (106235312), we get a palindrome (319767913).

The spelling of 213532601 in words is "two hundred thirteen million, five hundred thirty-two thousand, six hundred one".