448550621 has 2 divisors, whose sum is σ = 448550622. Its totient is φ = 448550620.

The previous prime is 448550611. The next prime is 448550633. The reversal of 448550621 is 126055844.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 317196100 + 131354521 = 17810^2 + 11461^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-448550621 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (448550611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 224275310 + 224275311.

It is an arithmetic number, because the mean of its divisors is an integer number (224275311).

Almost surely, 2^448550621 is an apocalyptic number.

It is an amenable number.

448550621 is a deficient number, since it is larger than the sum of its proper divisors (1).

448550621 is an equidigital number, since it uses as much as digits as its factorization.

448550621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 38400, while the sum is 35.

The square root of 448550621 is about 21179.0136928045. The cubic root of 448550621 is about 765.4858269335.

The spelling of 448550621 in words is "four hundred forty-eight million, five hundred fifty thousand, six hundred twenty-one".