201056566 has 4 divisors (see below), whose sum is σ = 301584852. Its totient is φ = 100528282.

The previous prime is 201056563. The next prime is 201056567. The reversal of 201056566 is 665650102.

201056566 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a Smith number, since the sum of its digits (31) 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 not an unprimeable number, because it can be changed into a prime (201056561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50264140 + ... + 50264143.

It is an arithmetic number, because the mean of its divisors is an integer number (75396213).

Almost surely, 2^201056566 is an apocalyptic number.

201056566 is a deficient number, since it is larger than the sum of its proper divisors (100528286).

201056566 is a wasteful number, since it uses less digits than its factorization.

201056566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100528285.

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 201056566 is about 14179.4416674282. The cubic root of 201056566 is about 585.8315454248.

The spelling of 201056566 in words is "two hundred one million, fifty-six thousand, five hundred sixty-six".