204462561 has 16 divisors (see below), whose sum is σ = 277202816. Its totient is φ = 134027136.

The previous prime is 204462529. The next prime is 204462563. The reversal of 204462561 is 165264402.

It is not a de Polignac number, because 204462561 - 2⁵ = 204462529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (204462563) 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, 80436 + ... + 82938.

It is an arithmetic number, because the mean of its divisors is an integer number (17325176).

Almost surely, 2^204462561 is an apocalyptic number.

It is an amenable number.

204462561 is a deficient number, since it is larger than the sum of its proper divisors (72740255).

204462561 is a wasteful number, since it uses less digits than its factorization.

204462561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2952.

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 204462561 is about 14299.0405622196. The cubic root of 204462561 is about 589.1211285111.

The spelling of 204462561 in words is "two hundred four million, four hundred sixty-two thousand, five hundred sixty-one".