457229981521 has 2 divisors, whose sum is σ = 457229981522. Its totient is φ = 457229981520.

The previous prime is 457229981501. The next prime is 457229981543. The reversal of 457229981521 is 125189922754.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 427245249600 + 29984731921 = 653640^2 + 173161^2 .

It is a cyclic number.

It is not a de Polignac number, because 457229981521 - 2¹¹ = 457229979473 is a prime.

It is not a weakly prime, because it can be changed into another prime (457229981501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 228614990760 + 228614990761.

It is an arithmetic number, because the mean of its divisors is an integer number (228614990761).

Almost surely, 2^457229981521 is an apocalyptic number.

It is an amenable number.

457229981521 is a deficient number, since it is larger than the sum of its proper divisors (1).

457229981521 is an equidigital number, since it uses as much as digits as its factorization.

457229981521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3628800, while the sum is 55.

The spelling of 457229981521 in words is "four hundred fifty-seven billion, two hundred twenty-nine million, nine hundred eighty-one thousand, five hundred twenty-one".