801200450 has 18 divisors (see below), whose sum is σ = 1490605209. Its totient is φ = 320400120.

The previous prime is 801200441. The next prime is 801200453. The reversal of 801200450 is 54002108.

It can be written as a sum of positive squares in 2 ways, for example, as 785176441 + 16024009 = 28021^2 + 4003^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=20015.

It is a super-2 number, since 2×801200450² = 1283844322160405000, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (801200453) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 198149 + ... + 202151.

Almost surely, 2^801200450 is an apocalyptic number.

801200450 is a deficient number, since it is larger than the sum of its proper divisors (689404759).

801200450 is an frugal number, since it uses more digits than its factorization.

801200450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8018 (or 4010 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 801200450 is about 28305.4844508975. The cubic root of 801200450 is about 928.7818676054.

Adding to 801200450 its reverse (54002108), we get a palindrome (855202558).

The spelling of 801200450 in words is "eight hundred one million, two hundred thousand, four hundred fifty".