160556566 has 4 divisors (see below), whose sum is σ = 240834852. Its totient is φ = 80278282.

The previous prime is 160556531. The next prime is 160556581. The reversal of 160556566 is 665655061.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 665655061 = 397 ⋅1676713.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 40139140 + ... + 40139143.

It is an arithmetic number, because the mean of its divisors is an integer number (60208713).

Almost surely, 2^160556566 is an apocalyptic number.

160556566 is a deficient number, since it is larger than the sum of its proper divisors (80278286).

160556566 is an equidigital number, since it uses as much as digits as its factorization.

160556566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80278285.

The product of its (nonzero) digits is 162000, while the sum is 40.

The square root of 160556566 is about 12671.0917445972. The cubic root of 160556566 is about 543.5122750674.

The spelling of 160556566 in words is "one hundred sixty million, five hundred fifty-six thousand, five hundred sixty-six".