445274257 has 4 divisors (see below), whose sum is σ = 450910720. Its totient is φ = 439637796.

The previous prime is 445274201. The next prime is 445274267. The reversal of 445274257 is 752472544.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 445274257 - 2¹¹ = 445272209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (445274267) 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, 2818113 + ... + 2818270.

It is an arithmetic number, because the mean of its divisors is an integer number (112727680).

Almost surely, 2^445274257 is an apocalyptic number.

It is an amenable number.

445274257 is a deficient number, since it is larger than the sum of its proper divisors (5636463).

445274257 is an equidigital number, since it uses as much as digits as its factorization.

445274257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5636462.

The product of its digits is 313600, while the sum is 40.

The square root of 445274257 is about 21101.5226227872. The cubic root of 445274257 is about 763.6174822115.

It can be divided in two parts, 44527 and 4257, that added together give a palindrome (48784).

The spelling of 445274257 in words is "four hundred forty-five million, two hundred seventy-four thousand, two hundred fifty-seven".