1200530550 has 24 divisors (see below), whose sum is σ = 2977316136. Its totient is φ = 320141440.

The previous prime is 1200530549. The next prime is 1200530567. The reversal of 1200530550 is 550350021.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4001619 + ... + 4001918.

It is an arithmetic number, because the mean of its divisors is an integer number (124054839).

Almost surely, 2^1200530550 is an apocalyptic number.

1200530550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1200530550 is an abundant number, since it is smaller than the sum of its proper divisors (1776785586).

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

1200530550 is a wasteful number, since it uses less digits than its factorization.

1200530550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8003552 (or 8003547 counting only the distinct ones).

The product of its (nonzero) digits is 750, while the sum is 21.

The square root of 1200530550 is about 34648.6731347681. The cubic root of 1200530550 is about 1062.8151554146.

Adding to 1200530550 its reverse (550350021), we get a palindrome (1750880571).

The spelling of 1200530550 in words is "one billion, two hundred million, five hundred thirty thousand, five hundred fifty".