380366521 has 2 divisors, whose sum is σ = 380366522. Its totient is φ = 380366520.

The previous prime is 380366461. The next prime is 380366543. The reversal of 380366521 is 125663083.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 352688400 + 27678121 = 18780^2 + 5261^2 .

It is a cyclic number.

It is not a de Polignac number, because 380366521 - 2²¹ = 378269369 is a prime.

It is not a weakly prime, because it can be changed into another prime (380366561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190183260 + 190183261.

It is an arithmetic number, because the mean of its divisors is an integer number (190183261).

Almost surely, 2^380366521 is an apocalyptic number.

It is an amenable number.

380366521 is a deficient number, since it is larger than the sum of its proper divisors (1).

380366521 is an equidigital number, since it uses as much as digits as its factorization.

380366521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 380366521 is about 19502.9874891002. The cubic root of 380366521 is about 724.5484439815.

The spelling of 380366521 in words is "three hundred eighty million, three hundred sixty-six thousand, five hundred twenty-one".