2612281 has 4 divisors (see below), whose sum is σ = 2985472. Its totient is φ = 2239092.

The previous prime is 2612257. The next prime is 2612287. The reversal of 2612281 is 1822162.

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 2612281 - 2⁵ = 2612249 is a prime.

It is a super-2 number, since 2×2612281² = 13648024045922, which contains 22 as substring.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (2612287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 186585 + ... + 186598.

It is an arithmetic number, because the mean of its divisors is an integer number (746368).

2^2612281 is an apocalyptic number.

It is an amenable number.

2612281 is a deficient number, since it is larger than the sum of its proper divisors (373191).

2612281 is an equidigital number, since it uses as much as digits as its factorization.

2612281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 373190.

The product of its digits is 384, while the sum is 22.

The square root of 2612281 is about 1616.2552397440. The cubic root of 2612281 is about 137.7230495484.

The spelling of 2612281 in words is "two million, six hundred twelve thousand, two hundred eighty-one".