2855617 has 2 divisors, whose sum is σ = 2855618. Its totient is φ = 2855616.

The previous prime is 2855603. The next prime is 2855653. The reversal of 2855617 is 7165582.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2702736 + 152881 = 1644^2 + 391^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2855617 is a prime.

It is a super-3 number, since 3×2855617³ = 69858801549333510339, which contains 333 as substring.

2855617 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (2856617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1427808 + 1427809.

It is an arithmetic number, because the mean of its divisors is an integer number (1427809).

2^2855617 is an apocalyptic number.

It is an amenable number.

2855617 is a deficient number, since it is larger than the sum of its proper divisors (1).

2855617 is an equidigital number, since it uses as much as digits as its factorization.

2855617 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16800, while the sum is 34.

The square root of 2855617 is about 1689.8570945497. The cubic root of 2855617 is about 141.8730764292.

The spelling of 2855617 in words is "two million, eight hundred fifty-five thousand, six hundred seventeen".