557204284 has 72 divisors (see below), whose sum is σ = 1226909040. Its totient is φ = 219469824.

The previous prime is 557204281. The next prime is 557204287. The reversal of 557204284 is 482402755.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (557204281) and next prime (557204287).

It is a super-2 number, since 2×557204284² = 620953228215905312, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (557204281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 965404 + ... + 965980.

Almost surely, 2^557204284 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 557204284, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (613454520).

557204284 is an abundant number, since it is smaller than the sum of its proper divisors (669704756).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

557204284 is a wasteful number, since it uses less digits than its factorization.

557204284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 987 (or 978 counting only the distinct ones).

The product of its (nonzero) digits is 89600, while the sum is 37.

The square root of 557204284 is about 23605.1749411014. The cubic root of 557204284 is about 822.8831110965.

The spelling of 557204284 in words is "five hundred fifty-seven million, two hundred four thousand, two hundred eighty-four".