557291947 has 8 divisors (see below), whose sum is σ = 565012800. Its totient is φ = 549623880.

The previous prime is 557291893. The next prime is 557291951. The reversal of 557291947 is 749192755.

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 557291947 - 2¹⁵ = 557259179 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 557291947.

It is not an unprimeable number, because it can be changed into a prime (557291957) 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, 8304 + ... + 34402.

It is an arithmetic number, because the mean of its divisors is an integer number (70626600).

Almost surely, 2^557291947 is an apocalyptic number.

557291947 is a deficient number, since it is larger than the sum of its proper divisors (7720853).

557291947 is a wasteful number, since it uses less digits than its factorization.

557291947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26393.

The product of its digits is 793800, while the sum is 49.

The square root of 557291947 is about 23607.0317278560. The cubic root of 557291947 is about 822.9262626070.

The spelling of 557291947 in words is "five hundred fifty-seven million, two hundred ninety-one thousand, nine hundred forty-seven".