445245545 has 4 divisors (see below), whose sum is σ = 534294660. Its totient is φ = 356196432.

The previous prime is 445245533. The next prime is 445245571. The reversal of 445245545 is 545542544.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 240498064 + 204747481 = 15508^2 + 14309^2 .

It is a cyclic number.

It is not a de Polignac number, because 445245545 - 2⁶ = 445245481 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 445245499 and 445245508.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44524550 + ... + 44524559.

It is an arithmetic number, because the mean of its divisors is an integer number (133573665).

Almost surely, 2^445245545 is an apocalyptic number.

It is an amenable number.

445245545 is a deficient number, since it is larger than the sum of its proper divisors (89049115).

445245545 is an equidigital number, since it uses as much as digits as its factorization.

445245545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89049114.

The product of its digits is 320000, while the sum is 38.

The square root of 445245545 is about 21100.8422817669. The cubic root of 445245545 is about 763.6010687644.

The spelling of 445245545 in words is "four hundred forty-five million, two hundred forty-five thousand, five hundred forty-five".