205144051 has 4 divisors (see below), whose sum is σ = 234450352. Its totient is φ = 175837752.

The previous prime is 205144031. The next prime is 205144067. The reversal of 205144051 is 150441502.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 205144051 - 2²³ = 196755443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (205144001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14653140 + ... + 14653153.

It is an arithmetic number, because the mean of its divisors is an integer number (58612588).

Almost surely, 2^205144051 is an apocalyptic number.

205144051 is a deficient number, since it is larger than the sum of its proper divisors (29306301).

205144051 is an equidigital number, since it uses as much as digits as its factorization.

205144051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29306300.

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 205144051 is about 14322.8506589994. The cubic root of 205144051 is about 589.7749318691.

Adding to 205144051 its reverse (150441502), we get a palindrome (355585553).

The spelling of 205144051 in words is "two hundred five million, one hundred forty-four thousand, fifty-one".