213445253 has 8 divisors (see below), whose sum is σ = 244078080. Its totient is φ = 182847600.

The previous prime is 213445247. The next prime is 213445273. The reversal of 213445253 is 352544312.

It is a happy number.

213445253 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 213445253 - 2⁸ = 213444997 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213445213) 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, 5843 + ... + 21471.

It is an arithmetic number, because the mean of its divisors is an integer number (30509760).

Almost surely, 2^213445253 is an apocalyptic number.

It is an amenable number.

213445253 is a deficient number, since it is larger than the sum of its proper divisors (30632827).

213445253 is a wasteful number, since it uses less digits than its factorization.

213445253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17587.

The product of its digits is 14400, while the sum is 29.

The square root of 213445253 is about 14609.7656723166. The cubic root of 213445253 is about 597.6251057162.

Adding to 213445253 its reverse (352544312), we get a palindrome (565989565).

The spelling of 213445253 in words is "two hundred thirteen million, four hundred forty-five thousand, two hundred fifty-three".