2011256417 has 8 divisors (see below), whose sum is σ = 2133662472. Its totient is φ = 1889305600.

The previous prime is 2011256411. The next prime is 2011256441. The reversal of 2011256417 is 7146521102.

It can be written as a sum of positive squares in 4 ways, for example, as 121528576 + 1889727841 = 11024^2 + 43471^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2011256417 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2011256417.

It is not an unprimeable number, because it can be changed into a prime (2011256411) 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 7 ways as a sum of consecutive naturals, for example, 104684 + ... + 122397.

It is an arithmetic number, because the mean of its divisors is an integer number (266707809).

Almost surely, 2^2011256417 is an apocalyptic number.

It is an amenable number.

2011256417 is a deficient number, since it is larger than the sum of its proper divisors (122406055).

2011256417 is a wasteful number, since it uses less digits than its factorization.

2011256417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227619.

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 2011256417 is about 44847.0335362329. The cubic root of 2011256417 is about 1262.2803286983.

Adding to 2011256417 its reverse (7146521102), we get a palindrome (9157777519).

The spelling of 2011256417 in words is "two billion, eleven million, two hundred fifty-six thousand, four hundred seventeen".