2149481 has 4 divisors (see below), whose sum is σ = 2162832. Its totient is φ = 2136132.

The previous prime is 2149471. The next prime is 2149493. The reversal of 2149481 is 1849412.

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 a cyclic number.

It is not a de Polignac number, because 2149481 - 2¹⁰ = 2148457 is a prime.

It is a super-2 number, since 2×2149481² = 9240537138722, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2149421) 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, 6431 + ... + 6756.

It is an arithmetic number, because the mean of its divisors is an integer number (540708).

2^2149481 is an apocalyptic number.

It is an amenable number.

2149481 is a deficient number, since it is larger than the sum of its proper divisors (13351).

2149481 is a wasteful number, since it uses less digits than its factorization.

2149481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13350.

The product of its digits is 2304, while the sum is 29.

The square root of 2149481 is about 1466.1108416487. The cubic root of 2149481 is about 129.0559018978.

The spelling of 2149481 in words is "two million, one hundred forty-nine thousand, four hundred eighty-one".