226278473 has 2 divisors, whose sum is σ = 226278474. Its totient is φ = 226278472.

The previous prime is 226278469. The next prime is 226278557. The reversal of 226278473 is 374872622.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 212343184 + 13935289 = 14572^2 + 3733^2 .

It is a cyclic number.

It is not a de Polignac number, because 226278473 - 2² = 226278469 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 226278473.

It is not a weakly prime, because it can be changed into another prime (226278413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 113139236 + 113139237.

It is an arithmetic number, because the mean of its divisors is an integer number (113139237).

Almost surely, 2^226278473 is an apocalyptic number.

It is an amenable number.

226278473 is a deficient number, since it is larger than the sum of its proper divisors (1).

226278473 is an equidigital number, since it uses as much as digits as its factorization.

226278473 is an evil number, because the sum of its binary digits is even.

The product of its digits is 225792, while the sum is 41.

The square root of 226278473 is about 15042.5554012608. Note that the first 3 decimals coincide. The cubic root of 226278473 is about 609.3700142936.

The spelling of 226278473 in words is "two hundred twenty-six million, two hundred seventy-eight thousand, four hundred seventy-three".