405235253 has 2 divisors, whose sum is σ = 405235254. Its totient is φ = 405235252.

The previous prime is 405235223. The next prime is 405235291. The reversal of 405235253 is 352532504.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 403487569 + 1747684 = 20087^2 + 1322^2 .

It is a cyclic number.

It is not a de Polignac number, because 405235253 - 2⁶ = 405235189 is a prime.

It is a super-2 number, since 2×405235253² = 328431220547948018, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (405235213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202617626 + 202617627.

It is an arithmetic number, because the mean of its divisors is an integer number (202617627).

Almost surely, 2^405235253 is an apocalyptic number.

It is an amenable number.

405235253 is a deficient number, since it is larger than the sum of its proper divisors (1).

405235253 is an equidigital number, since it uses as much as digits as its factorization.

405235253 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18000, while the sum is 29.

The square root of 405235253 is about 20130.4558567361. The cubic root of 405235253 is about 740.0068498270.

Adding to 405235253 its reverse (352532504), we get a palindrome (757767757).

The spelling of 405235253 in words is "four hundred five million, two hundred thirty-five thousand, two hundred fifty-three".