275561983 has 2 divisors, whose sum is σ = 275561984. Its totient is φ = 275561982.

The previous prime is 275561971. The next prime is 275562029. The reversal of 275561983 is 389165572.

It is an a-pointer prime, because the next prime (275562029) can be obtained adding 275561983 to its sum of digits (46).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 275561983 - 2⁹ = 275561471 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (275562983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 137780991 + 137780992.

It is an arithmetic number, because the mean of its divisors is an integer number (137780992).

Almost surely, 2^275561983 is an apocalyptic number.

275561983 is a deficient number, since it is larger than the sum of its proper divisors (1).

275561983 is an equidigital number, since it uses as much as digits as its factorization.

275561983 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 453600, while the sum is 46.

The square root of 275561983 is about 16600.0597288082. The cubic root of 275561983 is about 650.7383979455.

The spelling of 275561983 in words is "two hundred seventy-five million, five hundred sixty-one thousand, nine hundred eighty-three".