2453540221 has 4 divisors (see below), whose sum is σ = 2676589344. Its totient is φ = 2230491100.

The previous prime is 2453540207. The next prime is 2453540227. The reversal of 2453540221 is 1220453542.

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 2453540221 - 2⁷ = 2453540093 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2453540221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2453540227) 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, 111524545 + ... + 111524566.

It is an arithmetic number, because the mean of its divisors is an integer number (669147336).

Almost surely, 2^2453540221 is an apocalyptic number.

It is an amenable number.

2453540221 is a deficient number, since it is larger than the sum of its proper divisors (223049123).

2453540221 is a wasteful number, since it uses less digits than its factorization.

2453540221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223049122.

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 2453540221 is about 49533.2234061140. The cubic root of 2453540221 is about 1348.7487667748.

Adding to 2453540221 its reverse (1220453542), we get a palindrome (3673993763).

The spelling of 2453540221 in words is "two billion, four hundred fifty-three million, five hundred forty thousand, two hundred twenty-one".