1056520306 has 8 divisors (see below), whose sum is σ = 1585257984. Its totient is φ = 528100980.

The previous prime is 1056520291. The next prime is 1056520307. The reversal of 1056520306 is 6030256501.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1056520306² = 2232470313980667272, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1056520307) 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, 71110 + ... + 84673.

It is an arithmetic number, because the mean of its divisors is an integer number (198157248).

Almost surely, 2^1056520306 is an apocalyptic number.

1056520306 is a deficient number, since it is larger than the sum of its proper divisors (528737678).

1056520306 is a wasteful number, since it uses less digits than its factorization.

1056520306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159176.

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

The square root of 1056520306 is about 32504.1582878253. The cubic root of 1056520306 is about 1018.4958947408.

Adding to 1056520306 its reverse (6030256501), we get a palindrome (7086776807).

The spelling of 1056520306 in words is "one billion, fifty-six million, five hundred twenty thousand, three hundred six".