1065523321 has 2 divisors, whose sum is σ = 1065523322. Its totient is φ = 1065523320.

The previous prime is 1065523313. The next prime is 1065523337. The reversal of 1065523321 is 1233255601.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 780420096 + 285103225 = 27936^2 + 16885^2 .

It is a cyclic number.

It is not a de Polignac number, because 1065523321 - 2³ = 1065523313 is a prime.

It is a super-2 number, since 2×1065523321² = 2270679895189738082, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1065523321.

It is not a weakly prime, because it can be changed into another prime (1065523721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 532761660 + 532761661.

It is an arithmetic number, because the mean of its divisors is an integer number (532761661).

Almost surely, 2^1065523321 is an apocalyptic number.

It is an amenable number.

1065523321 is a deficient number, since it is larger than the sum of its proper divisors (1).

1065523321 is an equidigital number, since it uses as much as digits as its factorization.

1065523321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 1065523321 is about 32642.3547097938. The cubic root of 1065523321 is about 1021.3807141071.

Adding to 1065523321 its reverse (1233255601), we get a palindrome (2298778922).

The spelling of 1065523321 in words is "one billion, sixty-five million, five hundred twenty-three thousand, three hundred twenty-one".