1359555121 has 16 divisors (see below), whose sum is σ = 1433814480. Its totient is φ = 1287429120.

The previous prime is 1359555107. The next prime is 1359555133. The reversal of 1359555121 is 1215559531.

It can be written as a sum of positive squares in 8 ways, for example, as 600625 + 1358954496 = 775^2 + 36864^2 .

It is a cyclic number.

It is not a de Polignac number, because 1359555121 - 2¹¹ = 1359553073 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1359555101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 844165 + ... + 845773.

It is an arithmetic number, because the mean of its divisors is an integer number (89613405).

Almost surely, 2^1359555121 is an apocalyptic number.

It is an amenable number.

1359555121 is a deficient number, since it is larger than the sum of its proper divisors (74259359).

1359555121 is a wasteful number, since it uses less digits than its factorization.

1359555121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2244.

The product of its digits is 33750, while the sum is 37.

The square root of 1359555121 is about 36872.1455979985. The cubic root of 1359555121 is about 1107.8108304490.

The spelling of 1359555121 in words is "one billion, three hundred fifty-nine million, five hundred fifty-five thousand, one hundred twenty-one".