450920521 has 8 divisors (see below), whose sum is σ = 477400320. Its totient is φ = 424715472.

The previous prime is 450920467. The next prime is 450920557. The reversal of 450920521 is 125029054.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 450920521 - 2²¹ = 448823369 is a prime.

It is a super-2 number, since 2×450920521² = 406658632517822882, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 450920521.

It is not an unprimeable number, because it can be changed into a prime (450920581) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65305 + ... + 71878.

It is an arithmetic number, because the mean of its divisors is an integer number (59675040).

Almost surely, 2^450920521 is an apocalyptic number.

It is an amenable number.

450920521 is a deficient number, since it is larger than the sum of its proper divisors (26479799).

450920521 is a wasteful number, since it uses less digits than its factorization.

450920521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137375.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 450920521 is about 21234.8892391743. The cubic root of 450920521 is about 766.8315979335.

Adding to 450920521 its reverse (125029054), we get a palindrome (575949575).

The spelling of 450920521 in words is "four hundred fifty million, nine hundred twenty thousand, five hundred twenty-one".