2054181 has 4 divisors (see below), whose sum is σ = 2738912. Its totient is φ = 1369452.

The previous prime is 2054179. The next prime is 2054189. The reversal of 2054181 is 1814502.

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.

It is not a de Polignac number, because 2054181 - 2¹ = 2054179 is a prime.

It is a super-2 number, since 2×2054181² = 8439319161522, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2054189) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 342361 + ... + 342366.

It is an arithmetic number, because the mean of its divisors is an integer number (684728).

2^2054181 is an apocalyptic number.

It is an amenable number.

2054181 is a deficient number, since it is larger than the sum of its proper divisors (684731).

2054181 is an equidigital number, since it uses as much as digits as its factorization.

2054181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 684730.

The product of its (nonzero) digits is 320, while the sum is 21.

The square root of 2054181 is about 1433.2414311622. The cubic root of 2054181 is about 127.1197126940.

Adding to 2054181 its reverse (1814502), we get a palindrome (3868683).

The spelling of 2054181 in words is "two million, fifty-four thousand, one hundred eighty-one".