266252237 has 4 divisors (see below), whose sum is σ = 272746236. Its totient is φ = 259758240.

The previous prime is 266252179. The next prime is 266252269. The reversal of 266252237 is 732252662.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 55741156 + 210511081 = 7466^2 + 14509^2 .

It is a cyclic number.

It is not a de Polignac number, because 266252237 - 2⁸ = 266251981 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 266252197 and 266252206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266252537) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3246938 + ... + 3247019.

It is an arithmetic number, because the mean of its divisors is an integer number (68186559).

Almost surely, 2^266252237 is an apocalyptic number.

It is an amenable number.

266252237 is a deficient number, since it is larger than the sum of its proper divisors (6493999).

266252237 is an equidigital number, since it uses as much as digits as its factorization.

266252237 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6493998.

The product of its digits is 60480, while the sum is 35.

The square root of 266252237 is about 16317.2374193673. The cubic root of 266252237 is about 643.3259773172.

The spelling of 266252237 in words is "two hundred sixty-six million, two hundred fifty-two thousand, two hundred thirty-seven".