101822489 has 2 divisors, whose sum is σ = 101822490. Its totient is φ = 101822488.

The previous prime is 101822477. The next prime is 101822531. The reversal of 101822489 is 984228101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 94575625 + 7246864 = 9725^2 + 2692^2 .

It is a cyclic number.

It is not a de Polignac number, because 101822489 - 2⁴ = 101822473 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (101822419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50911244 + 50911245.

It is an arithmetic number, because the mean of its divisors is an integer number (50911245).

Almost surely, 2^101822489 is an apocalyptic number.

It is an amenable number.

101822489 is a deficient number, since it is larger than the sum of its proper divisors (1).

101822489 is an equidigital number, since it uses as much as digits as its factorization.

101822489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9216, while the sum is 35.

The square root of 101822489 is about 10090.7130075134. The cubic root of 101822489 is about 466.9616730510.

The spelling of 101822489 in words is "one hundred one million, eight hundred twenty-two thousand, four hundred eighty-nine".