206102157 has 8 divisors (see below), whose sum is σ = 275273376. Its totient is φ = 137166192.

The previous prime is 206102147. The next prime is 206102207. The reversal of 206102157 is 751201602.

206102157 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 206102157 - 2²⁰ = 205053581 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206102147) 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, 56758 + ... + 60279.

It is an arithmetic number, because the mean of its divisors is an integer number (34409172).

Almost surely, 2^206102157 is an apocalyptic number.

It is an amenable number.

206102157 is a deficient number, since it is larger than the sum of its proper divisors (69171219).

206102157 is a wasteful number, since it uses less digits than its factorization.

206102157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117627.

The product of its (nonzero) digits is 840, while the sum is 24.

The square root of 206102157 is about 14356.2584610336. The cubic root of 206102157 is about 590.6916689558.

Adding to 206102157 its reverse (751201602), we get a palindrome (957303759).

The spelling of 206102157 in words is "two hundred six million, one hundred two thousand, one hundred fifty-seven".