1056557956 has 12 divisors (see below), whose sum is σ = 1957739868. Its totient is φ = 497203712.

The previous prime is 1056557927. The next prime is 1056557959. The reversal of 1056557956 is 6597556501.

It can be written as a sum of positive squares in 2 ways, for example, as 898200900 + 158357056 = 29970^2 + 12584^2 .

It is a super-2 number, since 2×1056557956² = 2232629428773795872, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1056557959) 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, 7768741 + ... + 7768876.

It is an arithmetic number, because the mean of its divisors is an integer number (163144989).

Almost surely, 2^1056557956 is an apocalyptic number.

It is an amenable number.

1056557956 is a deficient number, since it is larger than the sum of its proper divisors (901181912).

1056557956 is a wasteful number, since it uses less digits than its factorization.

1056557956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15537638 (or 15537636 counting only the distinct ones).

The product of its (nonzero) digits is 1417500, while the sum is 49.

The square root of 1056557956 is about 32504.7374393334. The cubic root of 1056557956 is about 1018.5079929197.

The spelling of 1056557956 in words is "one billion, fifty-six million, five hundred fifty-seven thousand, nine hundred fifty-six".