348521 has 4 divisors (see below), whose sum is σ = 352212. Its totient is φ = 344832.

The previous prime is 348487. The next prime is 348527. The reversal of 348521 is 125843.

348521 = 5² + 6² + ... + 101².

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 125843 = 61 ⋅2063.

It can be written as a sum of positive squares in 2 ways, for example, as 133225 + 215296 = 365^2 + 464^2 .

It is a cyclic number.

It is not a de Polignac number, because 348521 - 2⁶ = 348457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (348527) 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, 1700 + ... + 1893.

It is an arithmetic number, because the mean of its divisors is an integer number (88053).

2³⁴⁸⁵²¹ is an apocalyptic number.

It is an amenable number.

348521 is a deficient number, since it is larger than the sum of its proper divisors (3691).

348521 is an equidigital number, since it uses as much as digits as its factorization.

348521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3690.

The product of its digits is 960, while the sum is 23.

The square root of 348521 is about 590.3566718519. The cubic root of 348521 is about 70.3735809315.

The spelling of 348521 in words is "three hundred forty-eight thousand, five hundred twenty-one".