557016387 has 4 divisors (see below), whose sum is σ = 742688520. Its totient is φ = 371344256.

The previous prime is 557016319. The next prime is 557016391. The reversal of 557016387 is 783610755.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 557016387 - 2¹⁰ = 557015363 is a prime.

It is not an unprimeable number, because it can be changed into a prime (557016287) 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 3 ways as a sum of consecutive naturals, for example, 92836062 + ... + 92836067.

It is an arithmetic number, because the mean of its divisors is an integer number (185672130).

Almost surely, 2^557016387 is an apocalyptic number.

557016387 is a deficient number, since it is larger than the sum of its proper divisors (185672133).

557016387 is a wasteful number, since it uses less digits than its factorization.

557016387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185672132.

The product of its (nonzero) digits is 176400, while the sum is 42.

The square root of 557016387 is about 23601.1946095955. The cubic root of 557016387 is about 822.7906048378.

The spelling of 557016387 in words is "five hundred fifty-seven million, sixteen thousand, three hundred eighty-seven".