405501253 has 2 divisors, whose sum is σ = 405501254. Its totient is φ = 405501252.

The previous prime is 405501209. The next prime is 405501259. The reversal of 405501253 is 352105504.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 336245569 + 69255684 = 18337^2 + 8322^2 .

It is a cyclic number.

It is not a de Polignac number, because 405501253 - 2¹⁷ = 405370181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (405501259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202750626 + 202750627.

It is an arithmetic number, because the mean of its divisors is an integer number (202750627).

Almost surely, 2^405501253 is an apocalyptic number.

It is an amenable number.

405501253 is a deficient number, since it is larger than the sum of its proper divisors (1).

405501253 is an equidigital number, since it uses as much as digits as its factorization.

405501253 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 405501253 is about 20137.0616774146. The cubic root of 405501253 is about 740.1687300902.

Adding to 405501253 its reverse (352105504), we get a palindrome (757606757).

The spelling of 405501253 in words is "four hundred five million, five hundred one thousand, two hundred fifty-three".