2541645421 has 8 divisors (see below), whose sum is σ = 2905448000. Its totient is φ = 2178020448.

The previous prime is 2541645389. The next prime is 2541645437. The reversal of 2541645421 is 1245461452.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2541645421 - 2⁵ = 2541645389 is a prime.

It is a super-2 number, since 2×2541645421² = 12919922892180534482, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2541645451) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12171 + ... + 72328.

It is an arithmetic number, because the mean of its divisors is an integer number (363181000).

Almost surely, 2^2541645421 is an apocalyptic number.

It is an amenable number.

2541645421 is a deficient number, since it is larger than the sum of its proper divisors (363802579).

2541645421 is an equidigital number, since it uses as much as digits as its factorization.

2541645421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88803.

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

The square root of 2541645421 is about 50414.7341657179. The cubic root of 2541645421 is about 1364.7035491589.

The spelling of 2541645421 in words is "two billion, five hundred forty-one million, six hundred forty-five thousand, four hundred twenty-one".