204789051 has 12 divisors (see below), whose sum is σ = 300222312. Its totient is φ = 134487936.

The previous prime is 204789047. The next prime is 204789077. The reversal of 204789051 is 150987402.

It is not a de Polignac number, because 204789051 - 2² = 204789047 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 204788997 and 204789015.

It is not an unprimeable number, because it can be changed into a prime (204789001) 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, 169206 + ... + 170411.

It is an arithmetic number, because the mean of its divisors is an integer number (25018526).

Almost surely, 2^204789051 is an apocalyptic number.

204789051 is a deficient number, since it is larger than the sum of its proper divisors (95433261).

204789051 is a wasteful number, since it uses less digits than its factorization.

204789051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 339690 (or 339687 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 204789051 is about 14310.4525085687. The cubic root of 204789051 is about 589.4345353086.

The spelling of 204789051 in words is "two hundred four million, seven hundred eighty-nine thousand, fifty-one".