206522045 has 8 divisors (see below), whose sum is σ = 248465880. Its totient is φ = 164791360.

The previous prime is 206522023. The next prime is 206522081. The reversal of 206522045 is 540225602.

It can be written as a sum of positive squares in 4 ways, for example, as 3003289 + 203518756 = 1733^2 + 14266^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 206522045 - 2⁶ = 206521981 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51146 + ... + 55035.

It is an arithmetic number, because the mean of its divisors is an integer number (31058235).

Almost surely, 2^206522045 is an apocalyptic number.

It is an amenable number.

206522045 is a deficient number, since it is larger than the sum of its proper divisors (41943835).

206522045 is a wasteful number, since it uses less digits than its factorization.

206522045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106575.

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 206522045 is about 14370.8748863804. The cubic root of 206522045 is about 591.0925318187.

Adding to 206522045 its reverse (540225602), we get a palindrome (746747647).

The spelling of 206522045 in words is "two hundred six million, five hundred twenty-two thousand, forty-five".