101089 has 2 divisors, whose sum is σ = 101090. Its totient is φ = 101088.

The previous prime is 101081. The next prime is 101107. The reversal of 101089 is 980101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 67600 + 33489 = 260^2 + 183^2 .

It is a cyclic number.

It is not a de Polignac number, because 101089 - 2³ = 101081 is a prime.

It is not a weakly prime, because it can be changed into another prime (101081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50544 + 50545.

It is an arithmetic number, because the mean of its divisors is an integer number (50545).

2¹⁰¹⁰⁸⁹ is an apocalyptic number.

It is an amenable number.

101089 is a deficient number, since it is larger than the sum of its proper divisors (1).

101089 is an equidigital number, since it uses as much as digits as its factorization.

101089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 19.

The square root of 101089 is about 317.9449637909. The cubic root of 101089 is about 46.5837700669.

The spelling of 101089 in words is "one hundred one thousand, eighty-nine".