253206222 has 8 divisors (see below), whose sum is σ = 506412456. Its totient is φ = 84402072.

The previous prime is 253206193. The next prime is 253206253. The reversal of 253206222 is 222602352.

It is a sphenic number, since it is the product of 3 distinct primes.

253206222 is an admirable number.

It is a super-2 number, since 2×253206222² = 128226781719026568, which contains 22 as substring.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 253206192 and 253206201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21100513 + ... + 21100524.

It is an arithmetic number, because the mean of its divisors is an integer number (63301557).

Almost surely, 2^253206222 is an apocalyptic number.

253206222 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

253206222 is a wasteful number, since it uses less digits than its factorization.

253206222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42201042.

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 253206222 is about 15912.4549331648. The cubic root of 253206222 is about 632.6421512844.

Adding to 253206222 its reverse (222602352), we get a palindrome (475808574).

The spelling of 253206222 in words is "two hundred fifty-three million, two hundred six thousand, two hundred twenty-two".