101806901 has 16 divisors (see below), whose sum is σ = 121810944. Its totient is φ = 83193264.

The previous prime is 101806891. The next prime is 101806909. The reversal of 101806901 is 109608101.

It is a de Polignac number, because none of the positive numbers 2^k-101806901 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101806909) 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 in 15 ways as a sum of consecutive naturals, for example, 58226 + ... + 59948.

It is an arithmetic number, because the mean of its divisors is an integer number (7613184).

Almost surely, 2^101806901 is an apocalyptic number.

It is an amenable number.

101806901 is a deficient number, since it is larger than the sum of its proper divisors (20004043).

101806901 is a wasteful number, since it uses less digits than its factorization.

101806901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2120.

The product of its (nonzero) digits is 432, while the sum is 26.

The square root of 101806901 is about 10089.9405845624. The cubic root of 101806901 is about 466.9378427881.

The spelling of 101806901 in words is "one hundred one million, eight hundred six thousand, nine hundred one".