875489081 has 2 divisors, whose sum is σ = 875489082. Its totient is φ = 875489080.

The previous prime is 875489057. The next prime is 875489101. The reversal of 875489081 is 180984578.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 684607225 + 190881856 = 26165^2 + 13816^2 .

It is a cyclic number.

It is not a de Polignac number, because 875489081 - 2²² = 871294777 is a prime.

It is a super-2 number, since 2×875489081² = 1532962261900449122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (875482081) 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, 437744540 + 437744541.

It is an arithmetic number, because the mean of its divisors is an integer number (437744541).

Almost surely, 2^875489081 is an apocalyptic number.

It is an amenable number.

875489081 is a deficient number, since it is larger than the sum of its proper divisors (1).

875489081 is an equidigital number, since it uses as much as digits as its factorization.

875489081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 645120, while the sum is 50.

The square root of 875489081 is about 29588.6647383757. The cubic root of 875489081 is about 956.6437635836.

The spelling of 875489081 in words is "eight hundred seventy-five million, four hundred eighty-nine thousand, eighty-one".