1056511115 has 32 divisors (see below), whose sum is σ = 1408637952. Its totient is φ = 754272000.

The previous prime is 1056511111. The next prime is 1056511139. The reversal of 1056511115 is 5111156501.

It is not a de Polignac number, because 1056511115 - 2² = 1056511111 is a prime.

It is a super-2 number, since 2×1056511115² = 2232431472237086450, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1056511111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1087580 + ... + 1088550.

It is an arithmetic number, because the mean of its divisors is an integer number (44019936).

Almost surely, 2^1056511115 is an apocalyptic number.

1056511115 is a deficient number, since it is larger than the sum of its proper divisors (352126837).

1056511115 is a wasteful number, since it uses less digits than its factorization.

1056511115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1331.

The product of its (nonzero) digits is 750, while the sum is 26.

The square root of 1056511115 is about 32504.0169056072. The cubic root of 1056511115 is about 1018.4929413276.

Adding to 1056511115 its reverse (5111156501), we get a palindrome (6167667616).

The spelling of 1056511115 in words is "one billion, fifty-six million, five hundred eleven thousand, one hundred fifteen".