87185093 has 2 divisors, whose sum is σ = 87185094. Its totient is φ = 87185092.

The previous prime is 87185081. The next prime is 87185099. The reversal of 87185093 is 39058178.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 59706529 + 27478564 = 7727^2 + 5242^2 .

It is a cyclic number.

It is not a de Polignac number, because 87185093 - 2⁶ = 87185029 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 87185093.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87185099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43592546 + 43592547.

It is an arithmetic number, because the mean of its divisors is an integer number (43592547).

Almost surely, 2^87185093 is an apocalyptic number.

It is an amenable number.

87185093 is a deficient number, since it is larger than the sum of its proper divisors (1).

87185093 is an equidigital number, since it uses as much as digits as its factorization.

87185093 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 60480, while the sum is 41.

The square root of 87185093 is about 9337.2958076737. The cubic root of 87185093 is about 443.4187755621.

The spelling of 87185093 in words is "eighty-seven million, one hundred eighty-five thousand, ninety-three".