226721253 has 16 divisors (see below), whose sum is σ = 330831936. Its totient is φ = 136967040.

The previous prime is 226721251. The next prime is 226721263. The reversal of 226721253 is 352127622.

It is not a de Polignac number, because 226721253 - 2¹ = 226721251 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 226721253.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (226721251) 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 15 ways as a sum of consecutive naturals, for example, 376 + ... + 21297.

It is an arithmetic number, because the mean of its divisors is an integer number (20676996).

Almost surely, 2^226721253 is an apocalyptic number.

It is an amenable number.

226721253 is a deficient number, since it is larger than the sum of its proper divisors (104110683).

226721253 is a wasteful number, since it uses less digits than its factorization.

226721253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22004.

The product of its digits is 10080, while the sum is 30.

The square root of 226721253 is about 15057.2657876522. The cubic root of 226721253 is about 609.7672255272.

Adding to 226721253 its reverse (352127622), we get a palindrome (578848875).

The spelling of 226721253 in words is "two hundred twenty-six million, seven hundred twenty-one thousand, two hundred fifty-three".