253433213 has 4 divisors (see below), whose sum is σ = 276472608. Its totient is φ = 230393820.

The previous prime is 253433197. The next prime is 253433237. The reversal of 253433213 is 312334352.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 253433213 - 2⁴ = 253433197 is a prime.

It is a super-4 number, since 4×253433213⁴ (a number of 35 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253433273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11519681 + ... + 11519702.

It is an arithmetic number, because the mean of its divisors is an integer number (69118152).

Almost surely, 2^253433213 is an apocalyptic number.

It is an amenable number.

253433213 is a deficient number, since it is larger than the sum of its proper divisors (23039395).

253433213 is a wasteful number, since it uses less digits than its factorization.

253433213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23039394.

The product of its digits is 6480, while the sum is 26.

The square root of 253433213 is about 15919.5858300397. The cubic root of 253433213 is about 632.8311424062.

Adding to 253433213 its reverse (312334352), we get a palindrome (565767565).

The spelling of 253433213 in words is "two hundred fifty-three million, four hundred thirty-three thousand, two hundred thirteen".