220401253 has 4 divisors (see below), whose sum is σ = 223505568. Its totient is φ = 217296940.

The previous prime is 220401241. The next prime is 220401317. The reversal of 220401253 is 352104022.

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 220401253 - 2⁵ = 220401221 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 220401253.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220401953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1552051 + ... + 1552192.

It is an arithmetic number, because the mean of its divisors is an integer number (55876392).

Almost surely, 2^220401253 is an apocalyptic number.

It is an amenable number.

220401253 is a deficient number, since it is larger than the sum of its proper divisors (3104315).

220401253 is an equidigital number, since it uses as much as digits as its factorization.

220401253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3104314.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 220401253 is about 14845.9170481314. The cubic root of 220401253 is about 604.0478641732.

Adding to 220401253 its reverse (352104022), we get a palindrome (572505275).

The spelling of 220401253 in words is "two hundred twenty million, four hundred one thousand, two hundred fifty-three".