1554543100241 has 2 divisors, whose sum is σ = 1554543100242. Its totient is φ = 1554543100240.

The previous prime is 1554543100237. The next prime is 1554543100333. The reversal of 1554543100241 is 1420013454551.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 886367643841 + 668175456400 = 941471^2 + 817420^2 .

It is a cyclic number.

It is not a de Polignac number, because 1554543100241 - 2² = 1554543100237 is a prime.

It is not a weakly prime, because it can be changed into another prime (1554543100441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 777271550120 + 777271550121.

It is an arithmetic number, because the mean of its divisors is an integer number (777271550121).

Almost surely, 2^{1554543100241} is an apocalyptic number.

It is an amenable number.

1554543100241 is a deficient number, since it is larger than the sum of its proper divisors (1).

1554543100241 is an equidigital number, since it uses as much as digits as its factorization.

1554543100241 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48000, while the sum is 35.

Adding to 1554543100241 its reverse (1420013454551), we get a palindrome (2974556554792).

The spelling of 1554543100241 in words is "one trillion, five hundred fifty-four billion, five hundred forty-three million, one hundred thousand, two hundred forty-one".