1554250160021 has 12 divisors (see below), whose sum is σ = 1683040235940. Its totient is φ = 1434662087040.

The previous prime is 1554250160011. The next prime is 1554250160093. The reversal of 1554250160021 is 1200610524551.

It can be written as a sum of positive squares in 6 ways, for example, as 96978679396 + 1457271480625 = 311414^2 + 1207175^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1554250160021 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1554250160021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1554250160011) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13578095 + ... + 13692083.

It is an arithmetic number, because the mean of its divisors is an integer number (140253352995).

Almost surely, 2^{1554250160021} is an apocalyptic number.

It is an amenable number.

1554250160021 is a deficient number, since it is larger than the sum of its proper divisors (128790075919).

1554250160021 is a wasteful number, since it uses less digits than its factorization.

1554250160021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194696 (or 194683 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 32.

Adding to 1554250160021 its reverse (1200610524551), we get a palindrome (2754860684572).

The spelling of 1554250160021 in words is "one trillion, five hundred fifty-four billion, two hundred fifty million, one hundred sixty thousand, twenty-one".