5538226217 has 2 divisors, whose sum is σ = 5538226218. Its totient is φ = 5538226216.

The previous prime is 5538226171. The next prime is 5538226241. The reversal of 5538226217 is 7126228355.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3442051561 + 2096174656 = 58669^2 + 45784^2 .

It is a cyclic number.

It is not a de Polignac number, because 5538226217 - 2¹⁸ = 5537964073 is a prime.

It is a super-2 number, since 2×5538226217² = 61343899261332262178, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (5538226817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2769113108 + 2769113109.

It is an arithmetic number, because the mean of its divisors is an integer number (2769113109).

Almost surely, 2^5538226217 is an apocalyptic number.

It is an amenable number.

5538226217 is a deficient number, since it is larger than the sum of its proper divisors (1).

5538226217 is an equidigital number, since it uses as much as digits as its factorization.

5538226217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 201600, while the sum is 41.

The square root of 5538226217 is about 74419.2597181670. The cubic root of 5538226217 is about 1769.2541802316.

The spelling of 5538226217 in words is "five billion, five hundred thirty-eight million, two hundred twenty-six thousand, two hundred seventeen".