449497521 has 24 divisors (see below), whose sum is σ = 718286400. Its totient is φ = 268581600.

The previous prime is 449497501. The next prime is 449497537. The reversal of 449497521 is 125794944.

It is not a de Polignac number, because 449497521 - 2¹⁸ = 449235377 is a prime.

It is not an unprimeable number, because it can be changed into a prime (449497501) 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, 24946 + ... + 39003.

It is an arithmetic number, because the mean of its divisors is an integer number (29928600).

Almost surely, 2^449497521 is an apocalyptic number.

It is an amenable number.

449497521 is a deficient number, since it is larger than the sum of its proper divisors (268788879).

449497521 is a wasteful number, since it uses less digits than its factorization.

449497521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64037 (or 64034 counting only the distinct ones).

The product of its digits is 362880, while the sum is 45.

The square root of 449497521 is about 21201.3565839547. The cubic root of 449497521 is about 766.0241006854.

The spelling of 449497521 in words is "four hundred forty-nine million, four hundred ninety-seven thousand, five hundred twenty-one".