1012523521 has 2 divisors, whose sum is σ = 1012523522. Its totient is φ = 1012523520.

The previous prime is 1012523483. The next prime is 1012523527. The reversal of 1012523521 is 1253252101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 687226225 + 325297296 = 26215^2 + 18036^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1012523521 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1012523492 and 1012523501.

It is not a weakly prime, because it can be changed into another prime (1012523527) 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, 506261760 + 506261761.

It is an arithmetic number, because the mean of its divisors is an integer number (506261761).

Almost surely, 2^1012523521 is an apocalyptic number.

It is an amenable number.

1012523521 is a deficient number, since it is larger than the sum of its proper divisors (1).

1012523521 is an equidigital number, since it uses as much as digits as its factorization.

1012523521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 1012523521 is about 31820.1747481060. The cubic root of 1012523521 is about 1004.1572007334.

Adding to 1012523521 its reverse (1253252101), we get a palindrome (2265775622).

The spelling of 1012523521 in words is "one billion, twelve million, five hundred twenty-three thousand, five hundred twenty-one".