445481505 has 128 divisors (see below), whose sum is σ = 976588800. Its totient is φ = 188116992.

The previous prime is 445481473. The next prime is 445481537. The reversal of 445481505 is 505184544.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (445481473) and next prime (445481537).

It is not a de Polignac number, because 445481505 - 2⁵ = 445481473 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 445481505.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 771777 + ... + 772353.

It is an arithmetic number, because the mean of its divisors is an integer number (7629600).

Almost surely, 2^445481505 is an apocalyptic number.

445481505 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

445481505 is an abundant number, since it is smaller than the sum of its proper divisors (531107295).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

445481505 is a wasteful number, since it uses less digits than its factorization.

445481505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 660 (or 654 counting only the distinct ones).

The product of its (nonzero) digits is 64000, while the sum is 36.

The square root of 445481505 is about 21106.4327871860. The cubic root of 445481505 is about 763.7359362854.

The spelling of 445481505 in words is "four hundred forty-five million, four hundred eighty-one thousand, five hundred five".