101251289 has 2 divisors, whose sum is σ = 101251290. Its totient is φ = 101251288.

The previous prime is 101251279. The next prime is 101251321. The reversal of 101251289 is 982152101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53875600 + 47375689 = 7340^2 + 6883^2 .

It is a cyclic number.

It is not a de Polignac number, because 101251289 - 2¹² = 101247193 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (101251229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50625644 + 50625645.

It is an arithmetic number, because the mean of its divisors is an integer number (50625645).

Almost surely, 2^101251289 is an apocalyptic number.

It is an amenable number.

101251289 is a deficient number, since it is larger than the sum of its proper divisors (1).

101251289 is an equidigital number, since it uses as much as digits as its factorization.

101251289 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 29.

The square root of 101251289 is about 10062.3699494702. The cubic root of 101251289 is about 466.0868537724.

The spelling of 101251289 in words is "one hundred one million, two hundred fifty-one thousand, two hundred eighty-nine".