2541323021 has 2 divisors, whose sum is σ = 2541323022. Its totient is φ = 2541323020.

The previous prime is 2541323009. The next prime is 2541323027. The reversal of 2541323021 is 1203231452.

2541323021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1848054121 + 693268900 = 42989^2 + 26330^2 .

It is a cyclic number.

It is not a de Polignac number, because 2541323021 - 2⁶ = 2541322957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2541323027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1270661510 + 1270661511.

It is an arithmetic number, because the mean of its divisors is an integer number (1270661511).

Almost surely, 2^2541323021 is an apocalyptic number.

It is an amenable number.

2541323021 is a deficient number, since it is larger than the sum of its proper divisors (1).

2541323021 is an equidigital number, since it uses as much as digits as its factorization.

2541323021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 2541323021 is about 50411.5365863807. The cubic root of 2541323021 is about 1364.6458438859.

Adding to 2541323021 its reverse (1203231452), we get a palindrome (3744554473).

The spelling of 2541323021 in words is "two billion, five hundred forty-one million, three hundred twenty-three thousand, twenty-one".