450517973 has 2 divisors, whose sum is σ = 450517974. Its totient is φ = 450517972.

The previous prime is 450517943. The next prime is 450517981. The reversal of 450517973 is 379715054.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 318336964 + 132181009 = 17842^2 + 11497^2 .

It is a cyclic number.

It is not a de Polignac number, because 450517973 - 2⁶ = 450517909 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 450517973.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (450517913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 225258986 + 225258987.

It is an arithmetic number, because the mean of its divisors is an integer number (225258987).

Almost surely, 2^450517973 is an apocalyptic number.

It is an amenable number.

450517973 is a deficient number, since it is larger than the sum of its proper divisors (1).

450517973 is an equidigital number, since it uses as much as digits as its factorization.

450517973 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 132300, while the sum is 41.

The square root of 450517973 is about 21225.4086650882. The cubic root of 450517973 is about 766.6033400960.

The spelling of 450517973 in words is "four hundred fifty million, five hundred seventeen thousand, nine hundred seventy-three".