355543997 has 2 divisors, whose sum is σ = 355543998. Its totient is φ = 355543996.

The previous prime is 355543963. The next prime is 355544011. The reversal of 355543997 is 799345553.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 354418276 + 1125721 = 18826^2 + 1061^2 .

It is a cyclic number.

It is not a de Polignac number, because 355543997 - 2¹⁸ = 355281853 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (355543957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 177771998 + 177771999.

It is an arithmetic number, because the mean of its divisors is an integer number (177771999).

Almost surely, 2^355543997 is an apocalyptic number.

It is an amenable number.

355543997 is a deficient number, since it is larger than the sum of its proper divisors (1).

355543997 is an equidigital number, since it uses as much as digits as its factorization.

355543997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2551500, while the sum is 50.

The square root of 355543997 is about 18855.8743366623. The cubic root of 355543997 is about 708.4313692897.

The spelling of 355543997 in words is "three hundred fifty-five million, five hundred forty-three thousand, nine hundred ninety-seven".