205414155 has 12 divisors (see below), whose sum is σ = 356051280. Its totient is φ = 109554192.

The previous prime is 205414151. The next prime is 205414171. The reversal of 205414155 is 551414502.

205414155 is a `hidden beast` number, since 205 + 41 + 415 + 5 = 666.

It is not a de Polignac number, because 205414155 - 2² = 205414151 is a prime.

It is not an unprimeable number, because it can be changed into a prime (205414151) 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, 2282335 + ... + 2282424.

It is an arithmetic number, because the mean of its divisors is an integer number (29670940).

Almost surely, 2^205414155 is an apocalyptic number.

205414155 is a deficient number, since it is larger than the sum of its proper divisors (150637125).

205414155 is a wasteful number, since it uses less digits than its factorization.

205414155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4564770 (or 4564767 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 27.

The square root of 205414155 is about 14332.2766858584. The cubic root of 205414155 is about 590.0336617776.

Adding to 205414155 its reverse (551414502), we get a palindrome (756828657).

The spelling of 205414155 in words is "two hundred five million, four hundred fourteen thousand, one hundred fifty-five".