204020051 has 8 divisors (see below), whose sum is σ = 216381984. Its totient is φ = 191949120.

The previous prime is 204019979. The next prime is 204020153. The reversal of 204020051 is 150020402.

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

It is a cyclic number.

It is not a de Polignac number, because 204020051 - 2¹⁰ = 204019027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (204020351) 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, 71306 + ... + 74111.

It is an arithmetic number, because the mean of its divisors is an integer number (27047748).

Almost surely, 2^204020051 is an apocalyptic number.

204020051 is a deficient number, since it is larger than the sum of its proper divisors (12361933).

204020051 is a wasteful number, since it uses less digits than its factorization.

204020051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145501.

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 204020051 is about 14283.5587652377. The cubic root of 204020051 is about 588.6958179080.

Adding to 204020051 its reverse (150020402), we get a palindrome (354040453).

The spelling of 204020051 in words is "two hundred four million, twenty thousand, fifty-one".