405223253 has 2 divisors, whose sum is σ = 405223254. Its totient is φ = 405223252.

The previous prime is 405223229. The next prime is 405223267. The reversal of 405223253 is 352322504.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 252873604 + 152349649 = 15902^2 + 12343^2 .

It is a cyclic number.

It is not a de Polignac number, because 405223253 - 2⁸ = 405222997 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (405253253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202611626 + 202611627.

It is an arithmetic number, because the mean of its divisors is an integer number (202611627).

Almost surely, 2^405223253 is an apocalyptic number.

It is an amenable number.

405223253 is a deficient number, since it is larger than the sum of its proper divisors (1).

405223253 is an equidigital number, since it uses as much as digits as its factorization.

405223253 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7200, while the sum is 26.

The square root of 405223253 is about 20130.1577986860. The cubic root of 405223253 is about 739.9995452883. Note that the first 3 decimals are identical.

Adding to 405223253 its reverse (352322504), we get a palindrome (757545757).

The spelling of 405223253 in words is "four hundred five million, two hundred twenty-three thousand, two hundred fifty-three".