2452005221 has 2 divisors, whose sum is σ = 2452005222. Its totient is φ = 2452005220.

The previous prime is 2452005169. The next prime is 2452005253. The reversal of 2452005221 is 1225002542.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2259100900 + 192904321 = 47530^2 + 13889^2 .

It is a cyclic number.

It is not a de Polignac number, because 2452005221 - 2¹⁴ = 2451988837 is a prime.

It is a super-2 number, since 2×2452005221² = 12024659207622517682, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2452007221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1226002610 + 1226002611.

It is an arithmetic number, because the mean of its divisors is an integer number (1226002611).

Almost surely, 2^2452005221 is an apocalyptic number.

It is an amenable number.

2452005221 is a deficient number, since it is larger than the sum of its proper divisors (1).

2452005221 is an equidigital number, since it uses as much as digits as its factorization.

2452005221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 2452005221 is about 49517.7263310827. The cubic root of 2452005221 is about 1348.4674370673.

Adding to 2452005221 its reverse (1225002542), we get a palindrome (3677007763).

The spelling of 2452005221 in words is "two billion, four hundred fifty-two million, five thousand, two hundred twenty-one".