350551997 has 2 divisors, whose sum is σ = 350551998. Its totient is φ = 350551996.

The previous prime is 350551987. The next prime is 350552011. The reversal of 350551997 is 799155053.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 327646201 + 22905796 = 18101^2 + 4786^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-350551997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (350551907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 175275998 + 175275999.

It is an arithmetic number, because the mean of its divisors is an integer number (175275999).

Almost surely, 2^350551997 is an apocalyptic number.

It is an amenable number.

350551997 is a deficient number, since it is larger than the sum of its proper divisors (1).

350551997 is an equidigital number, since it uses as much as digits as its factorization.

350551997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 212625, while the sum is 44.

The square root of 350551997 is about 18723.0338620641. The cubic root of 350551997 is about 705.1001631574.

The spelling of 350551997 in words is "three hundred fifty million, five hundred fifty-one thousand, nine hundred ninety-seven".