450521850 has 48 divisors (see below), whose sum is σ = 1121347872. Its totient is φ = 119703360.

The previous prime is 450521833. The next prime is 450521857. The reversal of 450521850 is 58125054.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an alternating number because its digits alternate between even and odd.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (450521857) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 37144 + ... + 47756.

It is an arithmetic number, because the mean of its divisors is an integer number (23361414).

Almost surely, 2^450521850 is an apocalyptic number.

It is a pronic number, being equal to 21225×21226.

It is a practical number, because each smaller number is the sum of distinct divisors of 450521850, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (560673936).

450521850 is an abundant number, since it is smaller than the sum of its proper divisors (670826022).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

450521850 is a wasteful number, since it uses less digits than its factorization.

450521850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10911 (or 10906 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 30.

The square root of 450521850 is about 21225.4999941109. The cubic root of 450521850 is about 766.6055391297.

The spelling of 450521850 in words is "four hundred fifty million, five hundred twenty-one thousand, eight hundred fifty".