344000557 has 2 divisors, whose sum is σ = 344000558. Its totient is φ = 344000556.

The previous prime is 344000549. The next prime is 344000563. The reversal of 344000557 is 755000443.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 343509156 + 491401 = 18534^2 + 701^2 .

It is a cyclic number.

It is not a de Polignac number, because 344000557 - 2³ = 344000549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (344000597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172000278 + 172000279.

It is an arithmetic number, because the mean of its divisors is an integer number (172000279).

Almost surely, 2^344000557 is an apocalyptic number.

It is an amenable number.

344000557 is a deficient number, since it is larger than the sum of its proper divisors (1).

344000557 is an equidigital number, since it uses as much as digits as its factorization.

344000557 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8400, while the sum is 28.

The square root of 344000557 is about 18547.2520066990. The cubic root of 344000557 is about 700.6799902540.

The spelling of 344000557 in words is "three hundred forty-four million, five hundred fifty-seven", and thus it is an aban number.