2481921 has 20 divisors (see below), whose sum is σ = 3994452. Its totient is φ = 1526688.

The previous prime is 2481911. The next prime is 2481959. The reversal of 2481921 is 1291842.

2481921 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 408321 + 2073600 = 639^2 + 1440^2 .

It is not a de Polignac number, because 2481921 - 2⁵ = 2481889 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (2481901) 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 19 ways as a sum of consecutive naturals, for example, 126 + ... + 2231.

2^2481921 is an apocalyptic number.

It is an amenable number.

2481921 is a deficient number, since it is larger than the sum of its proper divisors (1512531).

2481921 is a wasteful number, since it uses less digits than its factorization.

2481921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2382 (or 2373 counting only the distinct ones).

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

The square root of 2481921 is about 1575.4113748479. The cubic root of 2481921 is about 135.3929293094.

The spelling of 2481921 in words is "two million, four hundred eighty-one thousand, nine hundred twenty-one".