2611281 has 8 divisors (see below), whose sum is σ = 3540960. Its totient is φ = 1711232.

The previous prime is 2611277. The next prime is 2611291. The reversal of 2611281 is 1821162.

2611281 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2611281 - 2² = 2611277 is a prime.

It is a super-2 number, since 2×2611281² = 13637576921922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2611211) 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 7 ways as a sum of consecutive naturals, for example, 7200 + ... + 7553.

It is an arithmetic number, because the mean of its divisors is an integer number (442620).

2^2611281 is an apocalyptic number.

It is an amenable number.

2611281 is a deficient number, since it is larger than the sum of its proper divisors (929679).

2611281 is a wasteful number, since it uses less digits than its factorization.

2611281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14815.

The product of its digits is 192, while the sum is 21.

The square root of 2611281 is about 1615.9458530533. The cubic root of 2611281 is about 137.7054735134.

The spelling of 2611281 in words is "two million, six hundred eleven thousand, two hundred eighty-one".