405245223 has 12 divisors (see below), whose sum is σ = 585625248. Its totient is φ = 270038400.

The previous prime is 405245177. The next prime is 405245251. The reversal of 405245223 is 322542504.

It is a happy number.

It is not a de Polignac number, because 405245223 - 2⁸ = 405244967 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405245263) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12823 + ... + 31223.

It is an arithmetic number, because the mean of its divisors is an integer number (48802104).

Almost surely, 2^405245223 is an apocalyptic number.

405245223 is a deficient number, since it is larger than the sum of its proper divisors (180380025).

405245223 is a wasteful number, since it uses less digits than its factorization.

405245223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20854 (or 20851 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 27.

The square root of 405245223 is about 20130.7034899429. The cubic root of 405245223 is about 740.0129185716.

Adding to 405245223 its reverse (322542504), we get a palindrome (727787727).

The spelling of 405245223 in words is "four hundred five million, two hundred forty-five thousand, two hundred twenty-three".