261226 has 16 divisors (see below), whose sum is σ = 458496. Its totient is φ = 109296.

The previous prime is 261223. The next prime is 261229. The reversal of 261226 is 622162.

It is an interprime number because it is at equal distance from previous prime (261223) and next prime (261229).

It is not an unprimeable number, because it can be changed into a prime (261223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 460 + ... + 856.

It is an arithmetic number, because the mean of its divisors is an integer number (28656).

2²⁶¹²²⁶ is an apocalyptic number.

261226 is a deficient number, since it is larger than the sum of its proper divisors (197270).

261226 is a wasteful number, since it uses less digits than its factorization.

261226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 453.

The product of its digits is 288, while the sum is 19.

The square root of 261226 is about 511.1027293999. The cubic root of 261226 is about 63.9252055934.

Adding to 261226 its reverse (622162), we get a palindrome (883388).

The spelling of 261226 in words is "two hundred sixty-one thousand, two hundred twenty-six".