2610221 has 2 divisors, whose sum is σ = 2610222. Its totient is φ = 2610220.

The previous prime is 2610211. The next prime is 2610227. The reversal of 2610221 is 1220162.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1590121 + 1020100 = 1261^2 + 1010^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2610221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2610196 and 2610205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2610227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1305110 + 1305111.

It is an arithmetic number, because the mean of its divisors is an integer number (1305111).

2^2610221 is an apocalyptic number.

It is an amenable number.

2610221 is a deficient number, since it is larger than the sum of its proper divisors (1).

2610221 is an equidigital number, since it uses as much as digits as its factorization.

2610221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 2610221 is about 1615.6178384754. The cubic root of 2610221 is about 137.6868380164.

Adding to 2610221 its reverse (1220162), we get a palindrome (3830383).

The spelling of 2610221 in words is "two million, six hundred ten thousand, two hundred twenty-one".