1006520201 has 4 divisors (see below), whose sum is σ = 1008704004. Its totient is φ = 1004336400.

The previous prime is 1006520161. The next prime is 1006520257. The reversal of 1006520201 is 1020256001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1020256001 = 7309 ⋅139589.

It can be written as a sum of positive squares in 2 ways, for example, as 347263225 + 659256976 = 18635^2 + 25676^2 .

It is a cyclic number.

It is not a de Polignac number, because 1006520201 - 2²² = 1002325897 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1006520201.

It is not an unprimeable number, because it can be changed into a prime (1006520701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1091210 + ... + 1092131.

It is an arithmetic number, because the mean of its divisors is an integer number (252176001).

Almost surely, 2^1006520201 is an apocalyptic number.

It is an amenable number.

1006520201 is a deficient number, since it is larger than the sum of its proper divisors (2183803).

1006520201 is an equidigital number, since it uses as much as digits as its factorization.

1006520201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2183802.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 1006520201 is about 31725.7025296525. The cubic root of 1006520201 is about 1002.1686937010.

Adding to 1006520201 its reverse (1020256001), we get a palindrome (2026776202).

The spelling of 1006520201 in words is "one billion, six million, five hundred twenty thousand, two hundred one".