445051897 has 4 divisors (see below), whose sum is σ = 445574500. Its totient is φ = 444529296.

The previous prime is 445051889. The next prime is 445051907. The reversal of 445051897 is 798150544.

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 104427961 + 340623936 = 10219^2 + 18456^2 .

It is a cyclic number.

It is not a de Polignac number, because 445051897 - 2³ = 445051889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (445051297) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 260022 + ... + 261727.

It is an arithmetic number, because the mean of its divisors is an integer number (111393625).

Almost surely, 2^445051897 is an apocalyptic number.

It is an amenable number.

445051897 is a deficient number, since it is larger than the sum of its proper divisors (522603).

445051897 is an equidigital number, since it uses as much as digits as its factorization.

445051897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 522602.

The product of its (nonzero) digits is 201600, while the sum is 43.

The square root of 445051897 is about 21096.2531507375. The cubic root of 445051897 is about 763.4903498858.

The spelling of 445051897 in words is "four hundred forty-five million, fifty-one thousand, eight hundred ninety-seven".