205155741 has 16 divisors (see below), whose sum is σ = 312912000. Its totient is φ = 117121728.

The previous prime is 205155661. The next prime is 205155751. The reversal of 205155741 is 147551502.

It is not a de Polignac number, because 205155741 - 2¹¹ = 205153693 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 205155699 and 205155708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205155751) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21835 + ... + 29783.

It is an arithmetic number, because the mean of its divisors is an integer number (19557000).

Almost surely, 2^205155741 is an apocalyptic number.

205155741 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

205155741 is a deficient number, since it is larger than the sum of its proper divisors (107756259).

205155741 is a wasteful number, since it uses less digits than its factorization.

205155741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9188.

The product of its (nonzero) digits is 7000, while the sum is 30.

The square root of 205155741 is about 14323.2587423393. The cubic root of 205155741 is about 589.7861343030.

The spelling of 205155741 in words is "two hundred five million, one hundred fifty-five thousand, seven hundred forty-one".