2613281 has 4 divisors (see below), whose sum is σ = 2850864. Its totient is φ = 2375700.

The previous prime is 2613229. The next prime is 2613313. The reversal of 2613281 is 1823162.

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 2613281 - 2¹⁰ = 2612257 is a prime.

It is a super-2 number, since 2×2613281² = 13658475169922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2613211) 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, 118775 + ... + 118796.

It is an arithmetic number, because the mean of its divisors is an integer number (712716).

2^2613281 is an apocalyptic number.

It is an amenable number.

2613281 is a deficient number, since it is larger than the sum of its proper divisors (237583).

2613281 is a wasteful number, since it uses less digits than its factorization.

2613281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237582.

The product of its digits is 576, while the sum is 23.

The square root of 2613281 is about 1616.5645672227. The cubic root of 2613281 is about 137.7406210985.

The spelling of 2613281 in words is "two million, six hundred thirteen thousand, two hundred eighty-one".