405783253 has 2 divisors, whose sum is σ = 405783254. Its totient is φ = 405783252.

The previous prime is 405783241. The next prime is 405783293. The reversal of 405783253 is 352387504.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 364733604 + 41049649 = 19098^2 + 6407^2 .

It is a cyclic number.

It is not a de Polignac number, because 405783253 - 2⁵ = 405783221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (405783223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202891626 + 202891627.

It is an arithmetic number, because the mean of its divisors is an integer number (202891627).

Almost surely, 2^405783253 is an apocalyptic number.

It is an amenable number.

405783253 is a deficient number, since it is larger than the sum of its proper divisors (1).

405783253 is an equidigital number, since it uses as much as digits as its factorization.

405783253 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 100800, while the sum is 37.

The square root of 405783253 is about 20144.0624750818. The cubic root of 405783253 is about 740.3402702219.

The spelling of 405783253 in words is "four hundred five million, seven hundred eighty-three thousand, two hundred fifty-three".