445346505 has 20 divisors (see below), whose sum is σ = 798325572. Its totient is φ = 237517920.

The previous prime is 445346483. The next prime is 445346507. The reversal of 445346505 is 505643544.

It can be written as a sum of positive squares in 2 ways, for example, as 198133776 + 247212729 = 14076^2 + 15723^2 .

It is not a de Polignac number, because 445346505 - 2⁹ = 445345993 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 445346505.

It is not an unprimeable number, because it can be changed into a prime (445346507) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 549406 + ... + 550215.

Almost surely, 2^445346505 is an apocalyptic number.

445346505 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

445346505 is a deficient number, since it is larger than the sum of its proper divisors (352979067).

445346505 is a wasteful number, since it uses less digits than its factorization.

445346505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1099638 (or 1099629 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 36.

The square root of 445346505 is about 21103.2344677303. The cubic root of 445346505 is about 763.6587802441.

The spelling of 445346505 in words is "four hundred forty-five million, three hundred forty-six thousand, five hundred five".