2241981 has 24 divisors (see below), whose sum is σ = 3897920. Its totient is φ = 1213056.

The previous prime is 2241959. The next prime is 2241989. The reversal of 2241981 is 1891422.

2241981 is digitally balanced in base 8, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2241981 - 2⁵ = 2241949 is a prime.

It is a super-2 number, since 2×2241981² = 10052957608722, which contains 22 as substring.

It is a Duffinian number.

2241981 is strictly pandigital in base 8.

2241981 is a lucky number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2241989) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 261 + ... + 2133.

2^2241981 is an apocalyptic number.

2241981 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2241981 is a deficient number, since it is larger than the sum of its proper divisors (1655939).

2241981 is a wasteful number, since it uses less digits than its factorization.

2241981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1905 (or 1902 counting only the distinct ones).

The product of its digits is 1152, while the sum is 27.

The square root of 2241981 is about 1497.3246141034. The cubic root of 2241981 is about 130.8812123662.

It can be divided in two parts, 22419 and 81, that added together give a square (22500 = 150²).

The spelling of 2241981 in words is "two million, two hundred forty-one thousand, nine hundred eighty-one".