1521452005081 has 2 divisors, whose sum is σ = 1521452005082. Its totient is φ = 1521452005080.

The previous prime is 1521452005001. The next prime is 1521452005091. The reversal of 1521452005081 is 1805002541251.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1438080640000 + 83371365081 = 1199200^2 + 288741^2 .

It is a cyclic number.

It is not a de Polignac number, because 1521452005081 - 2¹⁷ = 1521451874009 is a prime.

It is a super-2 number, since 2×1521452005081² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1521452005001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 760726002540 + 760726002541.

It is an arithmetic number, because the mean of its divisors is an integer number (760726002541).

Almost surely, 2^{1521452005081} is an apocalyptic number.

It is an amenable number.

1521452005081 is a deficient number, since it is larger than the sum of its proper divisors (1).

1521452005081 is an equidigital number, since it uses as much as digits as its factorization.

1521452005081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16000, while the sum is 34.

The spelling of 1521452005081 in words is "one trillion, five hundred twenty-one billion, four hundred fifty-two million, five thousand, eighty-one".