395261 has 2 divisors, whose sum is σ = 395262. Its totient is φ = 395260.

The previous prime is 395251. The next prime is 395273. The reversal of 395261 is 162593.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 383161 + 12100 = 619^2 + 110^2 .

It is an emirp because it is prime and its reverse (162593) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 395261 - 2¹⁸ = 133117 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 395261.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (395201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 197630 + 197631.

It is an arithmetic number, because the mean of its divisors is an integer number (197631).

2³⁹⁵²⁶¹ is an apocalyptic number.

It is an amenable number.

395261 is a deficient number, since it is larger than the sum of its proper divisors (1).

395261 is an equidigital number, since it uses as much as digits as its factorization.

395261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1620, while the sum is 26.

The square root of 395261 is about 628.6978606612. The cubic root of 395261 is about 73.3884961442.

It can be divided in two parts, 395 and 261, that added together give a palindrome (656).

The spelling of 395261 in words is "three hundred ninety-five thousand, two hundred sixty-one".