448973561 has 2 divisors, whose sum is σ = 448973562. Its totient is φ = 448973560.

The previous prime is 448973543. The next prime is 448973573. The reversal of 448973561 is 165379844.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 418447936 + 30525625 = 20456^2 + 5525^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-448973561 is a prime.

It is not a weakly prime, because it can be changed into another prime (448973461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 224486780 + 224486781.

It is an arithmetic number, because the mean of its divisors is an integer number (224486781).

Almost surely, 2^448973561 is an apocalyptic number.

It is an amenable number.

448973561 is a deficient number, since it is larger than the sum of its proper divisors (1).

448973561 is an equidigital number, since it uses as much as digits as its factorization.

448973561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 725760, while the sum is 47.

The square root of 448973561 is about 21188.9962244557. The cubic root of 448973561 is about 765.7263444711.

The spelling of 448973561 in words is "four hundred forty-eight million, nine hundred seventy-three thousand, five hundred sixty-one".