1017320056 has 16 divisors (see below), whose sum is σ = 1969007040. Its totient is φ = 492251520.

The previous prime is 1017319981. The next prime is 1017320081. The reversal of 1017320056 is 6500237101.

It is a self number, because there is not a number n which added to its sum of digits gives 1017320056.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2050801 + ... + 2051296.

It is an arithmetic number, because the mean of its divisors is an integer number (123062940).

Almost surely, 2^1017320056 is an apocalyptic number.

It is an amenable number.

1017320056 is a deficient number, since it is larger than the sum of its proper divisors (951686984).

1017320056 is a wasteful number, since it uses less digits than its factorization.

1017320056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4102134 (or 4102130 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 25.

The square root of 1017320056 is about 31895.4550994338. The cubic root of 1017320056 is about 1005.7403374748.

Adding to 1017320056 its reverse (6500237101), we get a palindrome (7517557157).

The spelling of 1017320056 in words is "one billion, seventeen million, three hundred twenty thousand, fifty-six".