2612261 has 4 divisors (see below), whose sum is σ = 2616300. Its totient is φ = 2608224.

The previous prime is 2612257. The next prime is 2612287. The reversal of 2612261 is 1622162.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1622162 = 2 ⋅811081.

It can be written as a sum of positive squares in 2 ways, for example, as 1600225 + 1012036 = 1265^2 + 1006^2 .

It is a cyclic number.

It is not a de Polignac number, because 2612261 - 2² = 2612257 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2612201) 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, 806 + ... + 2423.

It is an arithmetic number, because the mean of its divisors is an integer number (654075).

2^2612261 is an apocalyptic number.

It is an amenable number.

2612261 is a deficient number, since it is larger than the sum of its proper divisors (4039).

2612261 is an equidigital number, since it uses as much as digits as its factorization.

2612261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4038.

The product of its digits is 288, while the sum is 20.

The square root of 2612261 is about 1616.2490525906. The cubic root of 2612261 is about 137.7226980717.

Subtracting from 2612261 its reverse (1622162), we obtain a palindrome (990099).

The spelling of 2612261 in words is "two million, six hundred twelve thousand, two hundred sixty-one".