205051641 has 8 divisors (see below), whose sum is σ = 273492864. Its totient is φ = 136655760.

The previous prime is 205051631. The next prime is 205051643. The reversal of 205051641 is 146150502.

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

It is not a de Polignac number, because 205051641 - 2²² = 200857337 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (205051643) 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, 1200 + ... + 20286.

It is an arithmetic number, because the mean of its divisors is an integer number (34186608).

Almost surely, 2^205051641 is an apocalyptic number.

It is an amenable number.

205051641 is a deficient number, since it is larger than the sum of its proper divisors (68441223).

205051641 is a wasteful number, since it uses less digits than its factorization.

205051641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22671.

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 205051641 is about 14319.6243316646. The cubic root of 205051641 is about 589.6863611195.

The spelling of 205051641 in words is "two hundred five million, fifty-one thousand, six hundred forty-one".