556845493 has 4 divisors (see below), whose sum is σ = 557032960. Its totient is φ = 556658028.

The previous prime is 556845473. The next prime is 556845547. The reversal of 556845493 is 394548655.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 556845493 - 2²⁵ = 523291061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (556845413) 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, 89205 + ... + 95242.

It is an arithmetic number, because the mean of its divisors is an integer number (139258240).

Almost surely, 2^556845493 is an apocalyptic number.

It is an amenable number.

556845493 is a deficient number, since it is larger than the sum of its proper divisors (187467).

556845493 is a wasteful number, since it uses less digits than its factorization.

556845493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187466.

The product of its digits is 2592000, while the sum is 49.

The square root of 556845493 is about 23597.5738795326. The cubic root of 556845493 is about 822.7064515028.

The spelling of 556845493 in words is "five hundred fifty-six million, eight hundred forty-five thousand, four hundred ninety-three".