1005534521 has 2 divisors, whose sum is σ = 1005534522. Its totient is φ = 1005534520.

The previous prime is 1005534443. The next prime is 1005534527. The reversal of 1005534521 is 1254355001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 856206121 + 149328400 = 29261^2 + 12220^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1005534521 is a prime.

It is a super-2 number, since 2×1005534521² = 2022199345845398882, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1005534527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 502767260 + 502767261.

It is an arithmetic number, because the mean of its divisors is an integer number (502767261).

Almost surely, 2^1005534521 is an apocalyptic number.

It is an amenable number.

1005534521 is a deficient number, since it is larger than the sum of its proper divisors (1).

1005534521 is an equidigital number, since it uses as much as digits as its factorization.

1005534521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 1005534521 is about 31710.1643168243. The cubic root of 1005534521 is about 1001.8414473237.

Adding to 1005534521 its reverse (1254355001), we get a palindrome (2259889522).

The spelling of 1005534521 in words is "one billion, five million, five hundred thirty-four thousand, five hundred twenty-one".