266145201 has 48 divisors (see below), whose sum is σ = 448251648. Its totient is φ = 149040000.

The previous prime is 266145197. The next prime is 266145211. The reversal of 266145201 is 102541662.

266145201 is a `hidden beast` number, since 26 + 614 + 5 + 20 + 1 = 666.

It is not a de Polignac number, because 266145201 - 2² = 266145197 is a prime.

It is not an unprimeable number, because it can be changed into a prime (266145211) 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 47 ways as a sum of consecutive naturals, for example, 960675 + ... + 960951.

It is an arithmetic number, because the mean of its divisors is an integer number (9338576).

Almost surely, 2^266145201 is an apocalyptic number.

266145201 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

266145201 is a deficient number, since it is larger than the sum of its proper divisors (182106447).

266145201 is a wasteful number, since it uses less digits than its factorization.

266145201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 542 (or 539 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 266145201 is about 16313.9572452548. The cubic root of 266145201 is about 643.2397579869.

Adding to 266145201 its reverse (102541662), we get a palindrome (368686863).

The spelling of 266145201 in words is "two hundred sixty-six million, one hundred forty-five thousand, two hundred one".