395561 has 8 divisors (see below), whose sum is σ = 422400. Its totient is φ = 369360.

The previous prime is 395543. The next prime is 395581. The reversal of 395561 is 165593.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 395561 - 2¹⁴ = 379177 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (395581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1976 + ... + 2166.

It is an arithmetic number, because the mean of its divisors is an integer number (52800).

2³⁹⁵⁵⁶¹ is an apocalyptic number.

It is an amenable number.

395561 is a deficient number, since it is larger than the sum of its proper divisors (26839).

395561 is a wasteful number, since it uses less digits than its factorization.

395561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319.

The product of its digits is 4050, while the sum is 29.

The square root of 395561 is about 628.9364037802. The cubic root of 395561 is about 73.4070585465.

The spelling of 395561 in words is "three hundred ninety-five thousand, five hundred sixty-one".