1300221550 has 36 divisors (see below), whose sum is σ = 2433906720. Its totient is φ = 516775360.

The previous prime is 1300221541. The next prime is 1300221553. The reversal of 1300221550 is 551220031.

1300221550 = 138² + 139² + ... + 1574².

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1300221553) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 2714211 + ... + 2714689.

It is an arithmetic number, because the mean of its divisors is an integer number (67608520).

Almost surely, 2^1300221550 is an apocalyptic number.

1300221550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1300221550 is a deficient number, since it is larger than the sum of its proper divisors (1133685170).

1300221550 is an equidigital number, since it uses as much as digits as its factorization.

1300221550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 957 (or 719 counting only the distinct ones).

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

The square root of 1300221550 is about 36058.5849694632. The cubic root of 1300221550 is about 1091.4548790505.

Adding to 1300221550 its reverse (551220031), we get a palindrome (1851441581).

The spelling of 1300221550 in words is "one billion, three hundred million, two hundred twenty-one thousand, five hundred fifty".