2554241021 has 2 divisors, whose sum is σ = 2554241022. Its totient is φ = 2554241020.

The previous prime is 2554240999. The next prime is 2554241051. The reversal of 2554241021 is 1201424552.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2182291225 + 371949796 = 46715^2 + 19286^2 .

It is a cyclic number.

It is not a de Polignac number, because 2554241021 - 2³⁰ = 1480499197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2554241051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1277120510 + 1277120511.

It is an arithmetic number, because the mean of its divisors is an integer number (1277120511).

Almost surely, 2^2554241021 is an apocalyptic number.

It is an amenable number.

2554241021 is a deficient number, since it is larger than the sum of its proper divisors (1).

2554241021 is an equidigital number, since it uses as much as digits as its factorization.

2554241021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3200, while the sum is 26.

The square root of 2554241021 is about 50539.4996116899. The cubic root of 2554241021 is about 1366.9541834572.

Adding to 2554241021 its reverse (1201424552), we get a palindrome (3755665573).

The spelling of 2554241021 in words is "two billion, five hundred fifty-four million, two hundred forty-one thousand, twenty-one".