226521045557 has 4 divisors (see below), whose sum is σ = 226545938880. Its totient is φ = 226496152236.

The previous prime is 226521045551. The next prime is 226521045581. The reversal of 226521045557 is 755540125622.

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 226521045557 - 2⁶ = 226521045493 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 (226521045551) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12433007 + ... + 12451212.

It is an arithmetic number, because the mean of its divisors is an integer number (56636484720).

Almost surely, 2^226521045557 is an apocalyptic number.

It is an amenable number.

226521045557 is a deficient number, since it is larger than the sum of its proper divisors (24893323).

226521045557 is an equidigital number, since it uses as much as digits as its factorization.

226521045557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24893322.

The product of its (nonzero) digits is 840000, while the sum is 44.

The spelling of 226521045557 in words is "two hundred twenty-six billion, five hundred twenty-one million, forty-five thousand, five hundred fifty-seven".