204691051 has 16 divisors (see below), whose sum is σ = 216003040. Its totient is φ = 193777920.

The previous prime is 204691027. The next prime is 204691057. The reversal of 204691051 is 150196402.

It is a cyclic number.

It is not a de Polignac number, because 204691051 - 2¹¹ = 204689003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (204691057) 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, 190945 + ... + 192013.

It is an arithmetic number, because the mean of its divisors is an integer number (13500190).

Almost surely, 2^204691051 is an apocalyptic number.

204691051 is a deficient number, since it is larger than the sum of its proper divisors (11311989).

204691051 is a wasteful number, since it uses less digits than its factorization.

204691051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1246.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 204691051 is about 14307.0280282105. The cubic root of 204691051 is about 589.3404974016.

The spelling of 204691051 in words is "two hundred four million, six hundred ninety-one thousand, fifty-one".