1452057221 has 2 divisors, whose sum is σ = 1452057222. Its totient is φ = 1452057220.

The previous prime is 1452057203. The next prime is 1452057259. The reversal of 1452057221 is 1227502541.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 859134721 + 592922500 = 29311^2 + 24350^2 .

It is a cyclic number.

It is not a de Polignac number, because 1452057221 - 2⁶ = 1452057157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1452057721) 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, 726028610 + 726028611.

It is an arithmetic number, because the mean of its divisors is an integer number (726028611).

Almost surely, 2^1452057221 is an apocalyptic number.

It is an amenable number.

1452057221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1452057221 is an equidigital number, since it uses as much as digits as its factorization.

1452057221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5600, while the sum is 29.

The square root of 1452057221 is about 38105.8685900217. The cubic root of 1452057221 is about 1132.3862230266.

Adding to 1452057221 its reverse (1227502541), we get a palindrome (2679559762).

The spelling of 1452057221 in words is "one billion, four hundred fifty-two million, fifty-seven thousand, two hundred twenty-one".