2455212217 has 2 divisors, whose sum is σ = 2455212218. Its totient is φ = 2455212216.

The previous prime is 2455212197. The next prime is 2455212223. The reversal of 2455212217 is 7122125542.

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., 2246380816 + 208831401 = 47396^2 + 14451^2 .

It is a cyclic number.

It is not a de Polignac number, because 2455212217 - 2¹¹ = 2455210169 is a prime.

It is not a weakly prime, because it can be changed into another prime (2455210217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1227606108 + 1227606109.

It is an arithmetic number, because the mean of its divisors is an integer number (1227606109).

Almost surely, 2^2455212217 is an apocalyptic number.

It is an amenable number.

2455212217 is a deficient number, since it is larger than the sum of its proper divisors (1).

2455212217 is an equidigital number, since it uses as much as digits as its factorization.

2455212217 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11200, while the sum is 31.

The square root of 2455212217 is about 49550.0980523752. The cubic root of 2455212217 is about 1349.0550711728.

Adding to 2455212217 its reverse (7122125542), we get a palindrome (9577337759).

The spelling of 2455212217 in words is "two billion, four hundred fifty-five million, two hundred twelve thousand, two hundred seventeen".