2026581217 has 2 divisors, whose sum is σ = 2026581218. Its totient is φ = 2026581216.

The previous prime is 2026581191. The next prime is 2026581241. The reversal of 2026581217 is 7121856202.

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., 1048205376 + 978375841 = 32376^2 + 31279^2 .

It is a cyclic number.

It is not a de Polignac number, because 2026581217 - 2¹¹ = 2026579169 is a prime.

It is not a weakly prime, because it can be changed into another prime (2026581017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1013290608 + 1013290609.

It is an arithmetic number, because the mean of its divisors is an integer number (1013290609).

Almost surely, 2^2026581217 is an apocalyptic number.

It is an amenable number.

2026581217 is a deficient number, since it is larger than the sum of its proper divisors (1).

2026581217 is an equidigital number, since it uses as much as digits as its factorization.

2026581217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13440, while the sum is 34.

The square root of 2026581217 is about 45017.5656494218. The cubic root of 2026581217 is about 1265.4782085929.

The spelling of 2026581217 in words is "two billion, twenty-six million, five hundred eighty-one thousand, two hundred seventeen".