1200553201 has 3 divisors (see below), whose sum is σ = 1200587851. Its totient is φ = 1200518552.

The previous prime is 1200553199. The next prime is 1200553217. The reversal of 1200553201 is 1023550021.

The square root of 1200553201 is 34649.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 214593201 + 985960000 = 14649^2 + 31400^2 .

It is not a de Polignac number, because 1200553201 - 2¹ = 1200553199 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1200553231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 17325 + ... + 51973.

Almost surely, 2^1200553201 is an apocalyptic number.

1200553201 is the 34649-th square number.

1200553201 is the 17325-th centered octagonal number.

It is an amenable number.

1200553201 is a deficient number, since it is larger than the sum of its proper divisors (34650).

1200553201 is an frugal number, since it uses more digits than its factorization.

1200553201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69298 (or 34649 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 19.

The cubic root of 1200553201 is about 1062.8218395912.

It can be divided in two parts, 120055 and 3201, that added together give a triangular number (123256 = T₄₉₆).

The spelling of 1200553201 in words is "one billion, two hundred million, five hundred fifty-three thousand, two hundred one".