1001055656 has 16 divisors (see below), whose sum is σ = 1891760640. Its totient is φ = 496586160.

The previous prime is 1001055637. The next prime is 1001055691. The reversal of 1001055656 is 6565501001.

It is a super-2 number, since 2×1001055656² = 2004224852819180672, which contains 22 as substring.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 491630 + ... + 493661.

It is an arithmetic number, because the mean of its divisors is an integer number (118235040).

Almost surely, 2^1001055656 is an apocalyptic number.

It is an amenable number.

1001055656 is a deficient number, since it is larger than the sum of its proper divisors (890704984).

1001055656 is a wasteful number, since it uses less digits than its factorization.

1001055656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 985424 (or 985420 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 29.

The square root of 1001055656 is about 31639.4635858448. The cubic root of 1001055656 is about 1000.3517615826.

Adding to 1001055656 its reverse (6565501001), we get a palindrome (7566556657).

The spelling of 1001055656 in words is "one billion, one million, fifty-five thousand, six hundred fifty-six".