261022 has 8 divisors (see below), whose sum is σ = 412200. Its totient is φ = 123624.

The previous prime is 261017. The next prime is 261031. The reversal of 261022 is 220162.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 260993 and 261011.

It is a congruent number.

It is an unprimeable number.

261022 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3397 + ... + 3472.

It is an arithmetic number, because the mean of its divisors is an integer number (51525).

2²⁶¹⁰²² is an apocalyptic number.

261022 is a deficient number, since it is larger than the sum of its proper divisors (151178).

261022 is a wasteful number, since it uses less digits than its factorization.

261022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6890.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 261022 is about 510.9031219321. The cubic root of 261022 is about 63.9085608259.

Adding to 261022 its reverse (220162), we get a palindrome (481184).

The spelling of 261022 in words is "two hundred sixty-one thousand, twenty-two".