557979247 has 8 divisors (see below), whose sum is σ = 644005152. Its totient is φ = 473532000.

The previous prime is 557979239. The next prime is 557979259. The reversal of 557979247 is 742979755.

It is a happy number.

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 557979247 - 2³ = 557979239 is a prime.

It is a super-2 number, since 2×557979247² = 622681680165374018, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (557979047) 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 7 ways as a sum of consecutive naturals, for example, 393904 + ... + 395317.

It is an arithmetic number, because the mean of its divisors is an integer number (80500644).

Almost surely, 2^557979247 is an apocalyptic number.

557979247 is a deficient number, since it is larger than the sum of its proper divisors (86025905).

557979247 is a wasteful number, since it uses less digits than its factorization.

557979247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 789329.

The product of its digits is 5556600, while the sum is 55.

The square root of 557979247 is about 23621.5843456784. The cubic root of 557979247 is about 823.2644245992.

The spelling of 557979247 in words is "five hundred fifty-seven million, nine hundred seventy-nine thousand, two hundred forty-seven".