445140145 has 4 divisors (see below), whose sum is σ = 534168180. Its totient is φ = 356112112.

The previous prime is 445140139. The next prime is 445140167. The reversal of 445140145 is 541041544.

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 260370496 + 184769649 = 16136^2 + 13593^2 .

It is a cyclic number.

It is not a de Polignac number, because 445140145 - 2¹⁷ = 445009073 is a prime.

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, 44514010 + ... + 44514019.

It is an arithmetic number, because the mean of its divisors is an integer number (133542045).

Almost surely, 2^445140145 is an apocalyptic number.

It is an amenable number.

445140145 is a deficient number, since it is larger than the sum of its proper divisors (89028035).

445140145 is an equidigital number, since it uses as much as digits as its factorization.

445140145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89028034.

The product of its (nonzero) digits is 6400, while the sum is 28.

The square root of 445140145 is about 21098.3446033095. The cubic root of 445140145 is about 763.5408099513.

Adding to 445140145 its reverse (541041544), we get a palindrome (986181689).

The spelling of 445140145 in words is "four hundred forty-five million, one hundred forty thousand, one hundred forty-five".