223540253 has 4 divisors (see below), whose sum is σ = 223942140. Its totient is φ = 223138368.

The previous prime is 223540201. The next prime is 223540279. The reversal of 223540253 is 352045322.

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 91336249 + 132204004 = 9557^2 + 11498^2 .

It is a cyclic number.

It is not a de Polignac number, because 223540253 - 2⁶ = 223540189 is a prime.

It is a super-2 number, since 2×223540253² = 99940489422608018, which contains 22 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 (223540153) 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, 200108 + ... + 201221.

It is an arithmetic number, because the mean of its divisors is an integer number (55985535).

Almost surely, 2^223540253 is an apocalyptic number.

It is an amenable number.

223540253 is a deficient number, since it is larger than the sum of its proper divisors (401887).

223540253 is an equidigital number, since it uses as much as digits as its factorization.

223540253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 401886.

The product of its (nonzero) digits is 7200, while the sum is 26.

The square root of 223540253 is about 14951.2625888251. The cubic root of 223540253 is about 606.9020149486.

Adding to 223540253 its reverse (352045322), we get a palindrome (575585575).

The spelling of 223540253 in words is "two hundred twenty-three million, five hundred forty thousand, two hundred fifty-three".