1000520566 has 4 divisors (see below), whose sum is σ = 1500780852. Its totient is φ = 500260282.

The previous prime is 1000520557. The next prime is 1000520579. The reversal of 1000520566 is 6650250001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6650250001 = 10429 ⋅637669.

It is a super-3 number, since 3×1000520566³ (a number of 28 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1000520566.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 250130140 + ... + 250130143.

It is an arithmetic number, because the mean of its divisors is an integer number (375195213).

Almost surely, 2^1000520566 is an apocalyptic number.

1000520566 is a deficient number, since it is larger than the sum of its proper divisors (500260286).

1000520566 is an equidigital number, since it uses as much as digits as its factorization.

1000520566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500260285.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 1000520566 is about 31631.0064019468. The cubic root of 1000520566 is about 1000.1734918988.

Adding to 1000520566 its reverse (6650250001), we get a palindrome (7650770567).

The spelling of 1000520566 in words is "one billion, five hundred twenty thousand, five hundred sixty-six".