101081605 has 16 divisors (see below), whose sum is σ = 127157184. Its totient is φ = 77051520.

The previous prime is 101081597. The next prime is 101081611. The reversal of 101081605 is 506180101.

It is not a de Polignac number, because 101081605 - 2³ = 101081597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3082 + ... + 14548.

It is an arithmetic number, because the mean of its divisors is an integer number (7947324).

Almost surely, 2^101081605 is an apocalyptic number.

It is an amenable number.

101081605 is a deficient number, since it is larger than the sum of its proper divisors (26075579).

101081605 is a wasteful number, since it uses less digits than its factorization.

101081605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11556.

The product of its (nonzero) digits is 240, while the sum is 22.

The square root of 101081605 is about 10053.9348018574. The cubic root of 101081605 is about 465.8263411944.

The spelling of 101081605 in words is "one hundred one million, eighty-one thousand, six hundred five".