450532561 has 4 divisors (see below), whose sum is σ = 450856000. Its totient is φ = 450209124.

The previous prime is 450532531. The next prime is 450532571. The reversal of 450532561 is 165235054.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 165235054 = 2 ⋅82617527.

It is a cyclic number.

It is not a de Polignac number, because 450532561 - 2⁵ = 450532529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (450532501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 159621 + ... + 162418.

It is an arithmetic number, because the mean of its divisors is an integer number (112714000).

Almost surely, 2^450532561 is an apocalyptic number.

It is an amenable number.

450532561 is a deficient number, since it is larger than the sum of its proper divisors (323439).

450532561 is a wasteful number, since it uses less digits than its factorization.

450532561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323438.

The product of its (nonzero) digits is 18000, while the sum is 31.

The square root of 450532561 is about 21225.7523070444. The cubic root of 450532561 is about 766.6116143414.

The spelling of 450532561 in words is "four hundred fifty million, five hundred thirty-two thousand, five hundred sixty-one".