266214253 has 6 divisors (see below), whose sum is σ = 267053774. Its totient is φ = 265376664.

The previous prime is 266214239. The next prime is 266214281. The reversal of 266214253 is 352412662.

It can be written as a sum of positive squares in only one way, i.e., 140707044 + 125507209 = 11862^2 + 11203^2 .

It is not a de Polignac number, because 266214253 - 2²⁵ = 232659821 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266214293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 403638 + ... + 404296.

Almost surely, 2^266214253 is an apocalyptic number.

It is an amenable number.

266214253 is a deficient number, since it is larger than the sum of its proper divisors (839521).

266214253 is an frugal number, since it uses more digits than its factorization.

266214253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1931 (or 1272 counting only the distinct ones).

The product of its digits is 17280, while the sum is 31.

The square root of 266214253 is about 16316.0734553385. The cubic root of 266214253 is about 643.2953832005.

The spelling of 266214253 in words is "two hundred sixty-six million, two hundred fourteen thousand, two hundred fifty-three".