1001055996 has 108 divisors (see below), whose sum is σ = 2691437112. Its totient is φ = 325340064.

The previous prime is 1001055989. The next prime is 1001056087. The reversal of 1001055996 is 6995501001.

1001055996 is a `hidden beast` number, since 1 + 0 + 0 + 10 + 559 + 96 = 666.

It is a tau number, because it is divible by the number of its divisors (108).

It is a super-2 number, since 2×1001055996² = 2004226214255104032, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 1001055996.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1796950 + ... + 1797506.

It is an arithmetic number, because the mean of its divisors is an integer number (24920714).

Almost surely, 2^1001055996 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1001055996, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1345718556).

1001055996 is an abundant number, since it is smaller than the sum of its proper divisors (1690381116).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1001055996 is an equidigital number, since it uses as much as digits as its factorization.

1001055996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 662 (or 605 counting only the distinct ones).

The product of its (nonzero) digits is 12150, while the sum is 36.

The square root of 1001055996 is about 31639.4689588811. The cubic root of 1001055996 is about 1000.3518748362.

Adding to 1001055996 its reverse (6995501001), we get a palindrome (7996556997).

The spelling of 1001055996 in words is "one billion, one million, fifty-five thousand, nine hundred ninety-six".