2011172461 has 8 divisors (see below), whose sum is σ = 2078866944. Its totient is φ = 1943654160.

The previous prime is 2011172459. The next prime is 2011172491. The reversal of 2011172461 is 1642711102.

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

It is a cyclic number.

It is not a de Polignac number, because 2011172461 - 2¹ = 2011172459 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2011172491) 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, 20626 + ... + 66691.

It is an arithmetic number, because the mean of its divisors is an integer number (259858368).

Almost surely, 2^2011172461 is an apocalyptic number.

It is an amenable number.

2011172461 is a deficient number, since it is larger than the sum of its proper divisors (67694483).

2011172461 is an equidigital number, since it uses as much as digits as its factorization.

2011172461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88091.

The product of its (nonzero) digits is 672, while the sum is 25.

The square root of 2011172461 is about 44846.0975002285. The cubic root of 2011172461 is about 1262.2627646389.

Adding to 2011172461 its reverse (1642711102), we get a palindrome (3653883563).

The spelling of 2011172461 in words is "two billion, eleven million, one hundred seventy-two thousand, four hundred sixty-one".