351641 has 4 divisors (see below), whose sum is σ = 356532. Its totient is φ = 346752.

The previous prime is 351599. The next prime is 351643. The reversal of 351641 is 146153.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 146153 = 7 ⋅20879.

It can be written as a sum of positive squares in 2 ways, for example, as 105625 + 246016 = 325^2 + 496^2 .

It is a cyclic number.

It is not a de Polignac number, because 351641 - 2¹⁰ = 350617 is a prime.

It is not an unprimeable number, because it can be changed into a prime (351643) 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 in 3 ways as a sum of consecutive naturals, for example, 2336 + ... + 2481.

It is an arithmetic number, because the mean of its divisors is an integer number (89133).

2³⁵¹⁶⁴¹ is an apocalyptic number.

It is an amenable number.

351641 is a deficient number, since it is larger than the sum of its proper divisors (4891).

351641 is an equidigital number, since it uses as much as digits as its factorization.

351641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4890.

The product of its digits is 360, while the sum is 20.

The square root of 351641 is about 592.9932545991. The cubic root of 351641 is about 70.5829548474.

Adding to 351641 its reverse (146153), we get a palindrome (497794).

The spelling of 351641 in words is "three hundred fifty-one thousand, six hundred forty-one".