266520052 has 6 divisors (see below), whose sum is σ = 466410098. Its totient is φ = 133260024.

The previous prime is 266520043. The next prime is 266520053. The reversal of 266520052 is 250025662.

It can be written as a sum of positive squares in only one way, i.e., 261016336 + 5503716 = 16156^2 + 2346^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 266520052.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266520053) 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 as a sum of consecutive naturals, namely, 33315003 + ... + 33315010.

Almost surely, 2^266520052 is an apocalyptic number.

It is an amenable number.

266520052 is a deficient number, since it is larger than the sum of its proper divisors (199890046).

266520052 is a wasteful number, since it uses less digits than its factorization.

266520052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66630017 (or 66630015 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 266520052 is about 16325.4418623203. The cubic root of 266520052 is about 643.5416056915.

The spelling of 266520052 in words is "two hundred sixty-six million, five hundred twenty thousand, fifty-two".