226355521 has 8 divisors (see below), whose sum is σ = 267037184. Its totient is φ = 187760160.

The previous prime is 226355509. The next prime is 226355537. The reversal of 226355521 is 125553622.

It is a happy number.

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

It is not a de Polignac number, because 226355521 - 2⁹ = 226355009 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (226355551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 521340 + ... + 521773.

It is an arithmetic number, because the mean of its divisors is an integer number (33379648).

Almost surely, 2^226355521 is an apocalyptic number.

It is an amenable number.

226355521 is a deficient number, since it is larger than the sum of its proper divisors (40681663).

226355521 is a wasteful number, since it uses less digits than its factorization.

226355521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1043151.

The product of its digits is 18000, while the sum is 31.

The square root of 226355521 is about 15045.1161843304. The cubic root of 226355521 is about 609.4391701032.

The spelling of 226355521 in words is "two hundred twenty-six million, three hundred fifty-five thousand, five hundred twenty-one".