1061522005 has 4 divisors (see below), whose sum is σ = 1273826412. Its totient is φ = 849217600.

The previous prime is 1061521949. The next prime is 1061522009. The reversal of 1061522005 is 5002251601.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 426381201 + 635140804 = 20649^2 + 25202^2 .

It is not a de Polignac number, because 1061522005 - 2⁹ = 1061521493 is a prime.

It is a super-3 number, since 3×1061522005³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1061522009) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 106152196 + ... + 106152205.

It is an arithmetic number, because the mean of its divisors is an integer number (318456603).

Almost surely, 2^1061522005 is an apocalyptic number.

It is an amenable number.

1061522005 is a deficient number, since it is larger than the sum of its proper divisors (212304407).

1061522005 is an equidigital number, since it uses as much as digits as its factorization.

1061522005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212304406.

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

The square root of 1061522005 is about 32581.0068137865. The cubic root of 1061522005 is about 1020.1005940133.

Adding to 1061522005 its reverse (5002251601), we get a palindrome (6063773606).

The spelling of 1061522005 in words is "one billion, sixty-one million, five hundred twenty-two thousand, five".