20159101 has 8 divisors (see below), whose sum is σ = 20520000. Its totient is φ = 19800480.

The previous prime is 20159047. The next prime is 20159107. The reversal of 20159101 is 10195102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20159101 - 2¹⁵ = 20126333 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20159107) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35145 + ... + 35713.

It is an arithmetic number, because the mean of its divisors is an integer number (2565000).

Almost surely, 2^20159101 is an apocalyptic number.

It is an amenable number.

20159101 is a deficient number, since it is larger than the sum of its proper divisors (360899).

20159101 is an equidigital number, since it uses as much as digits as its factorization.

20159101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1139.

The product of its (nonzero) digits is 90, while the sum is 19.

The square root of 20159101 is about 4489.8887514058. Note that the first 3 decimals coincide. The cubic root of 20159101 is about 272.1596390232.

The spelling of 20159101 in words is "twenty million, one hundred fifty-nine thousand, one hundred one".