1726481521 has 2 divisors, whose sum is σ = 1726481522. Its totient is φ = 1726481520.

The previous prime is 1726481509. The next prime is 1726481567. The reversal of 1726481521 is 1251846271.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1500400225 + 226081296 = 38735^2 + 15036^2 .

It is a cyclic number.

It is not a de Polignac number, because 1726481521 - 2⁵ = 1726481489 is a prime.

It is not a weakly prime, because it can be changed into another prime (1726481501) 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, 863240760 + 863240761.

It is an arithmetic number, because the mean of its divisors is an integer number (863240761).

Almost surely, 2^1726481521 is an apocalyptic number.

It is an amenable number.

1726481521 is a deficient number, since it is larger than the sum of its proper divisors (1).

1726481521 is an equidigital number, since it uses as much as digits as its factorization.

1726481521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 26880, while the sum is 37.

The square root of 1726481521 is about 41550.9509036797. The cubic root of 1726481521 is about 1199.6483972211.

The spelling of 1726481521 in words is "one billion, seven hundred twenty-six million, four hundred eighty-one thousand, five hundred twenty-one".