557412187 has 4 divisors (see below), whose sum is σ = 557520040. Its totient is φ = 557304336.

The previous prime is 557412143. The next prime is 557412197. The reversal of 557412187 is 781214755.

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 557412187 - 2¹⁵ = 557379419 is a prime.

It is a super-2 number, since 2×557412187² = 621416692432245938, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (557412137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45762 + ... + 56647.

It is an arithmetic number, because the mean of its divisors is an integer number (139380010).

Almost surely, 2^557412187 is an apocalyptic number.

557412187 is a deficient number, since it is larger than the sum of its proper divisors (107853).

557412187 is a wasteful number, since it uses less digits than its factorization.

557412187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107852.

The product of its digits is 78400, while the sum is 40.

The square root of 557412187 is about 23609.5782893299. The cubic root of 557412187 is about 822.9854425628.

The spelling of 557412187 in words is "five hundred fifty-seven million, four hundred twelve thousand, one hundred eighty-seven".