132217861 has 2 divisors, whose sum is σ = 132217862. Its totient is φ = 132217860.

The previous prime is 132217853. The next prime is 132217871. The reversal of 132217861 is 168712231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 126900225 + 5317636 = 11265^2 + 2306^2 .

It is a cyclic number.

It is not a de Polignac number, because 132217861 - 2³ = 132217853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (132217831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66108930 + 66108931.

It is an arithmetic number, because the mean of its divisors is an integer number (66108931).

Almost surely, 2^132217861 is an apocalyptic number.

It is an amenable number.

132217861 is a deficient number, since it is larger than the sum of its proper divisors (1).

132217861 is an equidigital number, since it uses as much as digits as its factorization.

132217861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4032, while the sum is 31.

The square root of 132217861 is about 11498.6025672688. The cubic root of 132217861 is about 509.4443018158. Note that the first 3 decimals are identical.

The spelling of 132217861 in words is "one hundred thirty-two million, two hundred seventeen thousand, eight hundred sixty-one".