228521253 has 8 divisors (see below), whose sum is σ = 304770400. Its totient is φ = 152309808.

The previous prime is 228521231. The next prime is 228521263. The reversal of 228521253 is 352125822.

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

It is not a de Polignac number, because 228521253 - 2⁸ = 228520997 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 228521253.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228521263) 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 7 ways as a sum of consecutive naturals, for example, 11118 + ... + 24096.

It is an arithmetic number, because the mean of its divisors is an integer number (38096300).

Almost surely, 2^228521253 is an apocalyptic number.

It is an amenable number.

228521253 is a deficient number, since it is larger than the sum of its proper divisors (76249147).

228521253 is a wasteful number, since it uses less digits than its factorization.

228521253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18851.

The product of its digits is 9600, while the sum is 30.

The square root of 228521253 is about 15116.9194282433. The cubic root of 228521253 is about 611.3766748306.

The spelling of 228521253 in words is "two hundred twenty-eight million, five hundred twenty-one thousand, two hundred fifty-three".