526121 has 2 divisors, whose sum is σ = 526122. Its totient is φ = 526120.

The previous prime is 526117. The next prime is 526139. The reversal of 526121 is 121625.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 313600 + 212521 = 560^2 + 461^2 .

It is a cyclic number.

It is not a de Polignac number, because 526121 - 2² = 526117 is a prime.

It is a Chen prime.

It is equal to p₄₃₅₃₂ and since 526121 and 43532 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 526121.

It is not a weakly prime, because it can be changed into another prime (529121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 263060 + 263061.

It is an arithmetic number, because the mean of its divisors is an integer number (263061).

2⁵²⁶¹²¹ is an apocalyptic number.

It is an amenable number.

526121 is a deficient number, since it is larger than the sum of its proper divisors (1).

526121 is an equidigital number, since it uses as much as digits as its factorization.

526121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 120, while the sum is 17.

The square root of 526121 is about 725.3419883062. The cubic root of 526121 is about 80.7288090547.

Adding to 526121 its reverse (121625), we get a palindrome (647746).

Subtracting from 526121 its reverse (121625), we obtain a square (404496 = 636²).

The spelling of 526121 in words is "five hundred twenty-six thousand, one hundred twenty-one".