266522 has 4 divisors (see below), whose sum is σ = 399786. Its totient is φ = 133260.

The previous prime is 266521. The next prime is 266549. The reversal of 266522 is 225662.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 225662 = 2 ⋅112831.

It can be written as a sum of positive squares in only one way, i.e., 137641 + 128881 = 371^2 + 359^2 .

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 266522.

It is not an unprimeable number, because it can be changed into a prime (266521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66629 + ... + 66632.

2²⁶⁶⁵²² is an apocalyptic number.

266522 is a deficient number, since it is larger than the sum of its proper divisors (133264).

266522 is a wasteful number, since it uses less digits than its factorization.

266522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133263.

The product of its digits is 1440, while the sum is 23.

The square root of 266522 is about 516.2576875941. The cubic root of 266522 is about 64.3543173573.

The spelling of 266522 in words is "two hundred sixty-six thousand, five hundred twenty-two".