1056808217 has 2 divisors, whose sum is σ = 1056808218. Its totient is φ = 1056808216.

The previous prime is 1056808211. The next prime is 1056808267. The reversal of 1056808217 is 7128086501.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 907455376 + 149352841 = 30124^2 + 12221^2 .

It is a cyclic number.

It is not a de Polignac number, because 1056808217 - 2⁶ = 1056808153 is a prime.

It is a super-2 number, since 2×1056808217² = 2233687215037438178, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1056808211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 528404108 + 528404109.

It is an arithmetic number, because the mean of its divisors is an integer number (528404109).

Almost surely, 2^1056808217 is an apocalyptic number.

It is an amenable number.

1056808217 is a deficient number, since it is larger than the sum of its proper divisors (1).

1056808217 is an equidigital number, since it uses as much as digits as its factorization.

1056808217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26880, while the sum is 38.

The square root of 1056808217 is about 32508.5868194851. The cubic root of 1056808217 is about 1018.5884026770.

The spelling of 1056808217 in words is "one billion, fifty-six million, eight hundred eight thousand, two hundred seventeen".