1552443235121 has 4 divisors (see below), whose sum is σ = 1605975760500. Its totient is φ = 1498910709744.

The previous prime is 1552443235069. The next prime is 1552443235159. The reversal of 1552443235121 is 1215323442551.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 283621218721 + 1268822016400 = 532561^2 + 1126420^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1552443235121 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1552443235171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26766262646 + ... + 26766262703.

It is an arithmetic number, because the mean of its divisors is an integer number (401493940125).

Almost surely, 2^{1552443235121} is an apocalyptic number.

It is an amenable number.

1552443235121 is a deficient number, since it is larger than the sum of its proper divisors (53532525379).

1552443235121 is an equidigital number, since it uses as much as digits as its factorization.

1552443235121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53532525378.

The product of its digits is 144000, while the sum is 38.

Adding to 1552443235121 its reverse (1215323442551), we get a palindrome (2767766677672).

The spelling of 1552443235121 in words is "one trillion, five hundred fifty-two billion, four hundred forty-three million, two hundred thirty-five thousand, one hundred twenty-one".