2452506221 has 4 divisors (see below), whose sum is σ = 2675461344. Its totient is φ = 2229551100.

The previous prime is 2452506209. The next prime is 2452506223. The reversal of 2452506221 is 1226052542.

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 2452506221 - 2⁶ = 2452506157 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 (2452506223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111477545 + ... + 111477566.

It is an arithmetic number, because the mean of its divisors is an integer number (668865336).

Almost surely, 2^2452506221 is an apocalyptic number.

It is an amenable number.

2452506221 is a deficient number, since it is larger than the sum of its proper divisors (222955123).

2452506221 is a wasteful number, since it uses less digits than its factorization.

2452506221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222955122.

The product of its (nonzero) digits is 9600, while the sum is 29.

The square root of 2452506221 is about 49522.7848671700. The cubic root of 2452506221 is about 1348.5592715889.

Adding to 2452506221 its reverse (1226052542), we get a palindrome (3678558763).

The spelling of 2452506221 in words is "two billion, four hundred fifty-two million, five hundred six thousand, two hundred twenty-one".