2455217 has 2 divisors, whose sum is σ = 2455218. Its totient is φ = 2455216.

The previous prime is 2455207. The next prime is 2455253. The reversal of 2455217 is 7125542.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2436721 + 18496 = 1561^2 + 136^2 .

It is a cyclic number.

It is not a de Polignac number, because 2455217 - 2⁸ = 2454961 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2455207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1227608 + 1227609.

It is an arithmetic number, because the mean of its divisors is an integer number (1227609).

2^2455217 is an apocalyptic number.

It is an amenable number.

2455217 is a deficient number, since it is larger than the sum of its proper divisors (1).

2455217 is an equidigital number, since it uses as much as digits as its factorization.

2455217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2800, while the sum is 26.

The square root of 2455217 is about 1566.9132075517. The cubic root of 2455217 is about 134.9055947204.

The spelling of 2455217 in words is "two million, four hundred fifty-five thousand, two hundred seventeen".