336521 has 2 divisors, whose sum is σ = 336522. Its totient is φ = 336520.

The previous prime is 336503. The next prime is 336527. The reversal of 336521 is 125633.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 336400 + 121 = 580^2 + 11^2 .

It is a cyclic number.

It is not a de Polignac number, because 336521 - 2¹⁸ = 74377 is a prime.

It is a super-2 number, since 2×336521² = 226492766882, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 336493 and 336502.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 336521.

It is not a weakly prime, because it can be changed into another prime (336527) by changing a digit.

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

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 168260 + 168261.

It is an arithmetic number, because the mean of its divisors is an integer number (168261).

2³³⁶⁵²¹ is an apocalyptic number.

It is an amenable number.

336521 is a deficient number, since it is larger than the sum of its proper divisors (1).

336521 is an equidigital number, since it uses as much as digits as its factorization.

336521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 540, while the sum is 20.

The square root of 336521 is about 580.1043009666. The cubic root of 336521 is about 69.5564470771.

The spelling of 336521 in words is "three hundred thirty-six thousand, five hundred twenty-one".