266187053 has 6 divisors (see below), whose sum is σ = 292585902. Its totient is φ = 241988120.

The previous prime is 266187029. The next prime is 266187079. The reversal of 266187053 is 350781662.

It can be written as a sum of positive squares in only one way, i.e., 176278729 + 89908324 = 13277^2 + 9482^2 .

It is not a de Polignac number, because 266187053 - 2⁶ = 266186989 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 266186998 and 266187016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266187353) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1099826 + ... + 1100067.

It is an arithmetic number, because the mean of its divisors is an integer number (48764317).

Almost surely, 2^266187053 is an apocalyptic number.

It is an amenable number.

266187053 is a deficient number, since it is larger than the sum of its proper divisors (26398849).

266187053 is a wasteful number, since it uses less digits than its factorization.

266187053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2199915 (or 2199904 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 266187053 is about 16315.2399001670. The cubic root of 266187053 is about 643.2734732412.

The spelling of 266187053 in words is "two hundred sixty-six million, one hundred eighty-seven thousand, fifty-three".