2011481 has 4 divisors (see below), whose sum is σ = 2014464. Its totient is φ = 2008500.

The previous prime is 2011441. The next prime is 2011483. The reversal of 2011481 is 1841102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2011481 - 2⁶ = 2011417 is a prime.

It is a super-2 number, since 2×2011481² = 8092111626722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2011483) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56 + ... + 2006.

It is an arithmetic number, because the mean of its divisors is an integer number (503616).

2^2011481 is an apocalyptic number.

It is an amenable number.

2011481 is a deficient number, since it is larger than the sum of its proper divisors (2983).

2011481 is a wasteful number, since it uses less digits than its factorization.

2011481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2982.

The product of its (nonzero) digits is 64, while the sum is 17.

The square root of 2011481 is about 1418.2669001285. The cubic root of 2011481 is about 126.2327310301.

Adding to 2011481 its reverse (1841102), we get a palindrome (3852583).

The spelling of 2011481 in words is "two million, eleven thousand, four hundred eighty-one".