2522261 has 4 divisors (see below), whose sum is σ = 2882592. Its totient is φ = 2161932.

The previous prime is 2522257. The next prime is 2522263. The reversal of 2522261 is 1622252.

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 2522261 - 2² = 2522257 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 (2522263) 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, 180155 + ... + 180168.

It is an arithmetic number, because the mean of its divisors is an integer number (720648).

2^2522261 is an apocalyptic number.

It is an amenable number.

2522261 is a deficient number, since it is larger than the sum of its proper divisors (360331).

2522261 is an equidigital number, since it uses as much as digits as its factorization.

2522261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360330.

The product of its digits is 480, while the sum is 20.

The square root of 2522261 is about 1588.1627750328. The cubic root of 2522261 is about 136.1225287042.

Subtracting from 2522261 its reverse (1622252), we obtain a palindrome (900009).

The spelling of 2522261 in words is "two million, five hundred twenty-two thousand, two hundred sixty-one".