348828521 has 2 divisors, whose sum is σ = 348828522. Its totient is φ = 348828520.

The previous prime is 348828517. The next prime is 348828539. The reversal of 348828521 is 125828843.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 299982400 + 48846121 = 17320^2 + 6989^2 .

It is a cyclic number.

It is not a de Polignac number, because 348828521 - 2² = 348828517 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is equal to p_18743738 and since 348828521 and 18743738 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (348828421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 174414260 + 174414261.

It is an arithmetic number, because the mean of its divisors is an integer number (174414261).

Almost surely, 2^348828521 is an apocalyptic number.

It is an amenable number.

348828521 is a deficient number, since it is larger than the sum of its proper divisors (1).

348828521 is an equidigital number, since it uses as much as digits as its factorization.

348828521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 122880, while the sum is 41.

The square root of 348828521 is about 18676.9515981597. The cubic root of 348828521 is about 703.9427312499.

The spelling of 348828521 in words is "three hundred forty-eight million, eight hundred twenty-eight thousand, five hundred twenty-one".