205015101 has 8 divisors (see below), whose sum is σ = 273474144. Its totient is φ = 136616400.

The previous prime is 205015093. The next prime is 205015117. The reversal of 205015101 is 101510502.

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

It is not a de Polignac number, because 205015101 - 2³ = 205015093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205015001) 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, 6450 + ... + 21251.

It is an arithmetic number, because the mean of its divisors is an integer number (34184268).

Almost surely, 2^205015101 is an apocalyptic number.

It is an amenable number.

205015101 is a deficient number, since it is larger than the sum of its proper divisors (68459043).

205015101 is a wasteful number, since it uses less digits than its factorization.

205015101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30171.

The product of its (nonzero) digits is 50, while the sum is 15.

The square root of 205015101 is about 14318.3484033599. The cubic root of 205015101 is about 589.6513318629.

Adding to 205015101 its reverse (101510502), we get a palindrome (306525603).

The spelling of 205015101 in words is "two hundred five million, fifteen thousand, one hundred one".