204214557 has 8 divisors (see below), whose sum is σ = 288302976. Its totient is φ = 128134592.

The previous prime is 204214553. The next prime is 204214559. The reversal of 204214557 is 755412402.

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 204214557 - 2² = 204214553 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204214553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2002053 + ... + 2002154.

It is an arithmetic number, because the mean of its divisors is an integer number (36037872).

Almost surely, 2^204214557 is an apocalyptic number.

It is an amenable number.

204214557 is a deficient number, since it is larger than the sum of its proper divisors (84088419).

204214557 is a wasteful number, since it uses less digits than its factorization.

204214557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4004227.

The product of its (nonzero) digits is 11200, while the sum is 30.

The square root of 204214557 is about 14290.3658805504. The cubic root of 204214557 is about 588.8828395579.

Adding to 204214557 its reverse (755412402), we get a palindrome (959626959).

The spelling of 204214557 in words is "two hundred four million, two hundred fourteen thousand, five hundred fifty-seven".