1055004217 has 2 divisors, whose sum is σ = 1055004218. Its totient is φ = 1055004216.

The previous prime is 1055004191. The next prime is 1055004229. The reversal of 1055004217 is 7124005501.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 740438521 + 314565696 = 27211^2 + 17736^2 .

It is an emirp because it is prime and its reverse (7124005501) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1055004217 is a prime.

It is a super-2 number, since 2×1055004217² = 2226067795775566178, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1055004191 and 1055004200.

It is not a weakly prime, because it can be changed into another prime (1055004277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 527502108 + 527502109.

It is an arithmetic number, because the mean of its divisors is an integer number (527502109).

Almost surely, 2^1055004217 is an apocalyptic number.

It is an amenable number.

1055004217 is a deficient number, since it is larger than the sum of its proper divisors (1).

1055004217 is an equidigital number, since it uses as much as digits as its factorization.

1055004217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1400, while the sum is 25.

The square root of 1055004217 is about 32480.8284531045. The cubic root of 1055004217 is about 1018.0084866573.

Adding to 1055004217 its reverse (7124005501), we get a palindrome (8179009718).

The spelling of 1055004217 in words is "one billion, fifty-five million, four thousand, two hundred seventeen".