226423157 has 2 divisors, whose sum is σ = 226423158. Its totient is φ = 226423156.

The previous prime is 226423147. The next prime is 226423159. The reversal of 226423157 is 751324622.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 222636241 + 3786916 = 14921^2 + 1946^2 .

It is a cyclic number.

It is not a de Polignac number, because 226423157 - 2¹⁴ = 226406773 is a prime.

Together with 226423159, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (226423159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 113211578 + 113211579.

It is an arithmetic number, because the mean of its divisors is an integer number (113211579).

Almost surely, 2^226423157 is an apocalyptic number.

It is an amenable number.

226423157 is a deficient number, since it is larger than the sum of its proper divisors (1).

226423157 is an equidigital number, since it uses as much as digits as its factorization.

226423157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20160, while the sum is 32.

The square root of 226423157 is about 15047.3637890496. The cubic root of 226423157 is about 609.4998650705.

Adding to 226423157 its reverse (751324622), we get a palindrome (977747779).

The spelling of 226423157 in words is "two hundred twenty-six million, four hundred twenty-three thousand, one hundred fifty-seven".