338064521 has 2 divisors, whose sum is σ = 338064522. Its totient is φ = 338064520.

The previous prime is 338064509. The next prime is 338064527. The reversal of 338064521 is 125460833.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 265201225 + 72863296 = 16285^2 + 8536^2 .

It is a cyclic number.

It is not a de Polignac number, because 338064521 - 2¹⁰ = 338063497 is a prime.

It is a super-2 number, since 2×338064521² = 228575240717918882, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (338064527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 169032260 + 169032261.

It is an arithmetic number, because the mean of its divisors is an integer number (169032261).

Almost surely, 2^338064521 is an apocalyptic number.

It is an amenable number.

338064521 is a deficient number, since it is larger than the sum of its proper divisors (1).

338064521 is an equidigital number, since it uses as much as digits as its factorization.

338064521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 338064521 is about 18386.5309669878. The cubic root of 338064521 is about 696.6262976031.

The spelling of 338064521 in words is "three hundred thirty-eight million, sixty-four thousand, five hundred twenty-one".