205157071 has 24 divisors (see below), whose sum is σ = 258896736. Its totient is φ = 161441280.

The previous prime is 205157063. The next prime is 205157077. The reversal of 205157071 is 170751502.

It is not a de Polignac number, because 205157071 - 2³ = 205157063 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205157077) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31150 + ... + 37156.

It is an arithmetic number, because the mean of its divisors is an integer number (10787364).

Almost surely, 2^205157071 is an apocalyptic number.

205157071 is a deficient number, since it is larger than the sum of its proper divisors (53739665).

205157071 is a wasteful number, since it uses less digits than its factorization.

205157071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6079 (or 6072 counting only the distinct ones).

The product of its (nonzero) digits is 2450, while the sum is 28.

The square root of 205157071 is about 14323.3051702461. The cubic root of 205157071 is about 589.7874088044.

The spelling of 205157071 in words is "two hundred five million, one hundred fifty-seven thousand, seventy-one".