450171925481 has 2 divisors, whose sum is σ = 450171925482. Its totient is φ = 450171925480.

The previous prime is 450171925459. The next prime is 450171925493. The reversal of 450171925481 is 184529171054.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 404082705625 + 46089219856 = 635675^2 + 214684^2 .

It is a cyclic number.

It is not a de Polignac number, because 450171925481 - 2⁶ = 450171925417 is a prime.

It is a super-2 number, since 2×450171925481² (a number of 24 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (450171925421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 225085962740 + 225085962741.

It is an arithmetic number, because the mean of its divisors is an integer number (225085962741).

Almost surely, 2^450171925481 is an apocalyptic number.

It is an amenable number.

450171925481 is a deficient number, since it is larger than the sum of its proper divisors (1).

450171925481 is an equidigital number, since it uses as much as digits as its factorization.

450171925481 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 403200, while the sum is 47.

The spelling of 450171925481 in words is "four hundred fifty billion, one hundred seventy-one million, nine hundred twenty-five thousand, four hundred eighty-one".