2541456421 has 4 divisors (see below), whose sum is σ = 2904521632. Its totient is φ = 2178391212.

The previous prime is 2541456419. The next prime is 2541456433. The reversal of 2541456421 is 1246541452.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2541456421 - 2¹ = 2541456419 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2541451421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 181532595 + ... + 181532608.

It is an arithmetic number, because the mean of its divisors is an integer number (726130408).

Almost surely, 2^2541456421 is an apocalyptic number.

It is an amenable number.

2541456421 is a deficient number, since it is larger than the sum of its proper divisors (363065211).

2541456421 is an equidigital number, since it uses as much as digits as its factorization.

2541456421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 363065210.

The product of its digits is 38400, while the sum is 34.

The square root of 2541456421 is about 50412.8596788558. The cubic root of 2541456421 is about 1364.6697212874.

Adding to 2541456421 its reverse (1246541452), we get a palindrome (3787997873).

The spelling of 2541456421 in words is "two billion, five hundred forty-one million, four hundred fifty-six thousand, four hundred twenty-one".