955781 has 2 divisors, whose sum is σ = 955782. Its totient is φ = 955780.

The previous prime is 955777. The next prime is 955793. The reversal of 955781 is 187559.

955781 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 919681 + 36100 = 959^2 + 190^2 .

It is an emirp because it is prime and its reverse (187559) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 955781 - 2² = 955777 is a prime.

It is a super-2 number, since 2×955781² = 1827034639922, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 955781.

It is not a weakly prime, because it can be changed into another prime (955711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 477890 + 477891.

It is an arithmetic number, because the mean of its divisors is an integer number (477891).

2⁹⁵⁵⁷⁸¹ is an apocalyptic number.

It is an amenable number.

955781 is a deficient number, since it is larger than the sum of its proper divisors (1).

955781 is an equidigital number, since it uses as much as digits as its factorization.

955781 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12600, while the sum is 35.

The square root of 955781 is about 977.6405269832. The cubic root of 955781 is about 98.5037575761.

The spelling of 955781 in words is "nine hundred fifty-five thousand, seven hundred eighty-one".