2921617 has 2 divisors, whose sum is σ = 2921618. Its totient is φ = 2921616.

The previous prime is 2921599. The next prime is 2921623. The reversal of 2921617 is 7161292.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2556801 + 364816 = 1599^2 + 604^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2921617 is a prime.

It is a plaindrome in base 7.

It is not a weakly prime, because it can be changed into another prime (2921647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1460808 + 1460809.

It is an arithmetic number, because the mean of its divisors is an integer number (1460809).

2^2921617 is an apocalyptic number.

It is an amenable number.

2921617 is a deficient number, since it is larger than the sum of its proper divisors (1).

2921617 is an equidigital number, since it uses as much as digits as its factorization.

2921617 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1512, while the sum is 28.

The square root of 2921617 is about 1709.2738224170. The cubic root of 2921617 is about 142.9577686759.

The spelling of 2921617 in words is "two million, nine hundred twenty-one thousand, six hundred seventeen".