2061281 has 4 divisors (see below), whose sum is σ = 2073792. Its totient is φ = 2048772.

The previous prime is 2061277. The next prime is 2061287. The reversal of 2061281 is 1821602.

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 2061281 - 2² = 2061277 is a prime.

It is a super-2 number, since 2×2061281² = 8497758721922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2061287) 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, 6005 + ... + 6338.

It is an arithmetic number, because the mean of its divisors is an integer number (518448).

2^2061281 is an apocalyptic number.

It is an amenable number.

2061281 is a deficient number, since it is larger than the sum of its proper divisors (12511).

2061281 is a wasteful number, since it uses less digits than its factorization.

2061281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12510.

The product of its (nonzero) digits is 192, while the sum is 20.

The square root of 2061281 is about 1435.7161975822. The cubic root of 2061281 is about 127.2660016700.

Adding to 2061281 its reverse (1821602), we get a palindrome (3882883).

The spelling of 2061281 in words is "two million, sixty-one thousand, two hundred eighty-one".