343972553 has 2 divisors, whose sum is σ = 343972554. Its totient is φ = 343972552.

The previous prime is 343972549. The next prime is 343972589. The reversal of 343972553 is 355279343.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 177768889 + 166203664 = 13333^2 + 12892^2 .

It is a cyclic number.

It is not a de Polignac number, because 343972553 - 2² = 343972549 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 343972553.

It is not a weakly prime, because it can be changed into another prime (343972253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171986276 + 171986277.

It is an arithmetic number, because the mean of its divisors is an integer number (171986277).

Almost surely, 2^343972553 is an apocalyptic number.

It is an amenable number.

343972553 is a deficient number, since it is larger than the sum of its proper divisors (1).

343972553 is an equidigital number, since it uses as much as digits as its factorization.

343972553 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 340200, while the sum is 41.

The square root of 343972553 is about 18546.4970547001. The cubic root of 343972553 is about 700.6609763556.

The spelling of 343972553 in words is "three hundred forty-three million, nine hundred seventy-two thousand, five hundred fifty-three".