205157007 has 12 divisors (see below), whose sum is σ = 323277864. Its totient is φ = 124337520.

The previous prime is 205156997. The next prime is 205157009. The reversal of 205157007 is 700751502.

It is not a de Polignac number, because 205157007 - 2⁷ = 205156879 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205157009) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1036048 + ... + 1036245.

It is an arithmetic number, because the mean of its divisors is an integer number (26939822).

Almost surely, 2^205157007 is an apocalyptic number.

205157007 is a deficient number, since it is larger than the sum of its proper divisors (118120857).

205157007 is a wasteful number, since it uses less digits than its factorization.

205157007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2072310 (or 2072307 counting only the distinct ones).

The product of its (nonzero) digits is 2450, while the sum is 27.

The square root of 205157007 is about 14323.3029361248. The cubic root of 205157007 is about 589.7873474751.

The spelling of 205157007 in words is "two hundred five million, one hundred fifty-seven thousand, seven".