450531405 has 12 divisors (see below), whose sum is σ = 780921180. Its totient is φ = 240283392.

The previous prime is 450531397. The next prime is 450531427. The reversal of 450531405 is 504135054.

It can be written as a sum of positive squares in 2 ways, for example, as 236113956 + 214417449 = 15366^2 + 14643^2 .

It is not a de Polignac number, because 450531405 - 2³ = 450531397 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5005860 + ... + 5005949.

It is an arithmetic number, because the mean of its divisors is an integer number (65076765).

Almost surely, 2^450531405 is an apocalyptic number.

450531405 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

450531405 is a deficient number, since it is larger than the sum of its proper divisors (330389775).

450531405 is a wasteful number, since it uses less digits than its factorization.

450531405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10011820 (or 10011817 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 450531405 is about 21225.7250759544. The cubic root of 450531405 is about 766.6109586701.

Adding to 450531405 its reverse (504135054), we get a palindrome (954666459).

The spelling of 450531405 in words is "four hundred fifty million, five hundred thirty-one thousand, four hundred five".