448640521 has 24 divisors (see below), whose sum is σ = 561098880. Its totient is φ = 356523552.

The previous prime is 448640513. The next prime is 448640561. The reversal of 448640521 is 125046844.

It is not a de Polignac number, because 448640521 - 2³ = 448640513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (448640561) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 38631 + ... + 48883.

It is an arithmetic number, because the mean of its divisors is an integer number (23379120).

Almost surely, 2^448640521 is an apocalyptic number.

It is an amenable number.

448640521 is a deficient number, since it is larger than the sum of its proper divisors (112458359).

448640521 is a wasteful number, since it uses less digits than its factorization.

448640521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10333 (or 10326 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 34.

The square root of 448640521 is about 21181.1359704809. The cubic root of 448640521 is about 765.5369639183.

The spelling of 448640521 in words is "four hundred forty-eight million, six hundred forty thousand, five hundred twenty-one".