226765021 has 4 divisors (see below), whose sum is σ = 259160032. Its totient is φ = 194370012.

The previous prime is 226765001. The next prime is 226765067. The reversal of 226765021 is 120567622.

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 226765021 - 2⁷ = 226764893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (226765001) 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, 16197495 + ... + 16197508.

It is an arithmetic number, because the mean of its divisors is an integer number (64790008).

Almost surely, 2^226765021 is an apocalyptic number.

It is an amenable number.

226765021 is a deficient number, since it is larger than the sum of its proper divisors (32395011).

226765021 is an equidigital number, since it uses as much as digits as its factorization.

226765021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32395010.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 226765021 is about 15058.7191022344. The cubic root of 226765021 is about 609.8064610412.

The spelling of 226765021 in words is "two hundred twenty-six million, seven hundred sixty-five thousand, twenty-one".