226521851 has 2 divisors, whose sum is σ = 226521852. Its totient is φ = 226521850.

The previous prime is 226521833. The next prime is 226521863. The reversal of 226521851 is 158125622.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-226521851 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (226521151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 113260925 + 113260926.

It is an arithmetic number, because the mean of its divisors is an integer number (113260926).

Almost surely, 2^226521851 is an apocalyptic number.

226521851 is a deficient number, since it is larger than the sum of its proper divisors (1).

226521851 is an equidigital number, since it uses as much as digits as its factorization.

226521851 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9600, while the sum is 32.

The square root of 226521851 is about 15050.6428766349. The cubic root of 226521851 is about 609.5884090789.

The spelling of 226521851 in words is "two hundred twenty-six million, five hundred twenty-one thousand, eight hundred fifty-one".