445513457 has 4 divisors (see below), whose sum is σ = 460876020. Its totient is φ = 430150896.

The previous prime is 445513403. The next prime is 445513459. The reversal of 445513457 is 754315544.

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 329821921 + 115691536 = 18161^2 + 10756^2 .

It is a cyclic number.

It is not a de Polignac number, because 445513457 - 2²⁴ = 428736241 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 445513457.

It is not an unprimeable number, because it can be changed into a prime (445513459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7681238 + ... + 7681295.

It is an arithmetic number, because the mean of its divisors is an integer number (115219005).

Almost surely, 2^445513457 is an apocalyptic number.

It is an amenable number.

445513457 is a deficient number, since it is larger than the sum of its proper divisors (15362563).

445513457 is a wasteful number, since it uses less digits than its factorization.

445513457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15362562.

The product of its digits is 168000, while the sum is 38.

The square root of 445513457 is about 21107.1896992470. The cubic root of 445513457 is about 763.7541954102.

The spelling of 445513457 in words is "four hundred forty-five million, five hundred thirteen thousand, four hundred fifty-seven".