556270166 has 4 divisors (see below), whose sum is σ = 834405252. Its totient is φ = 278135082.

The previous prime is 556270123. The next prime is 556270171. The reversal of 556270166 is 661072655.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 661072655 = 5 ⋅132214531.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 139067540 + ... + 139067543.

It is an arithmetic number, because the mean of its divisors is an integer number (208601313).

Almost surely, 2^556270166 is an apocalyptic number.

556270166 is a deficient number, since it is larger than the sum of its proper divisors (278135086).

556270166 is a wasteful number, since it uses less digits than its factorization.

556270166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278135085.

The product of its (nonzero) digits is 75600, while the sum is 38.

The square root of 556270166 is about 23585.3803446118. The cubic root of 556270166 is about 822.4230166028.

The spelling of 556270166 in words is "five hundred fifty-six million, two hundred seventy thousand, one hundred sixty-six".