526261 has 4 divisors (see below), whose sum is σ = 527724. Its totient is φ = 524800.

The previous prime is 526249. The next prime is 526271. The reversal of 526261 is 162625.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 323761 + 202500 = 569^2 + 450^2 .

It is a cyclic number.

It is not a de Polignac number, because 526261 - 2¹⁷ = 395189 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (526231) 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, 231 + ... + 1051.

It is an arithmetic number, because the mean of its divisors is an integer number (131931).

2⁵²⁶²⁶¹ is an apocalyptic number.

It is an amenable number.

526261 is a deficient number, since it is larger than the sum of its proper divisors (1463).

526261 is an equidigital number, since it uses as much as digits as its factorization.

526261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1462.

The product of its digits is 720, while the sum is 22.

The square root of 526261 is about 725.4384880884. The cubic root of 526261 is about 80.7359690242.

Adding to 526261 its reverse (162625), we get a palindrome (688886).

It can be divided in two parts, 526 and 261, that added together give a palindrome (787).

The spelling of 526261 in words is "five hundred twenty-six thousand, two hundred sixty-one".