955565491 has 2 divisors, whose sum is σ = 955565492. Its totient is φ = 955565490.

The previous prime is 955565489. The next prime is 955565503. The reversal of 955565491 is 194565559.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 955565491 - 2¹ = 955565489 is a prime.

Together with 955565489, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (955565411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 477782745 + 477782746.

It is an arithmetic number, because the mean of its divisors is an integer number (477782746).

Almost surely, 2^955565491 is an apocalyptic number.

955565491 is a deficient number, since it is larger than the sum of its proper divisors (1).

955565491 is an equidigital number, since it uses as much as digits as its factorization.

955565491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1215000, while the sum is 49.

The square root of 955565491 is about 30912.2223562137. Note that the first 3 decimals coincide. The cubic root of 955565491 is about 984.9635349432.

The spelling of 955565491 in words is "nine hundred fifty-five million, five hundred sixty-five thousand, four hundred ninety-one".