2543349221 has 8 divisors (see below), whose sum is σ = 2912657280. Its totient is φ = 2175534288.

The previous prime is 2543349203. The next prime is 2543349229. The reversal of 2543349221 is 1229433452.

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 2543349221 - 2⁶ = 2543349157 is a prime.

It is a super-2 number, since 2×2543349221² = 12937250519922613682, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2543349229) 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, 369626 + ... + 376443.

It is an arithmetic number, because the mean of its divisors is an integer number (364082160).

Almost surely, 2^2543349221 is an apocalyptic number.

It is an amenable number.

2543349221 is a deficient number, since it is larger than the sum of its proper divisors (369308059).

2543349221 is an equidigital number, since it uses as much as digits as its factorization.

2543349221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 746563.

The product of its digits is 51840, while the sum is 35.

The square root of 2543349221 is about 50431.6291725738. The cubic root of 2543349221 is about 1365.0084254826.

The spelling of 2543349221 in words is "two billion, five hundred forty-three million, three hundred forty-nine thousand, two hundred twenty-one".