87148361 has 2 divisors, whose sum is σ = 87148362. Its totient is φ = 87148360.

The previous prime is 87148351. The next prime is 87148447. The reversal of 87148361 is 16384178.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51208336 + 35940025 = 7156^2 + 5995^2 .

It is a cyclic number.

It is not a de Polignac number, because 87148361 - 2¹⁴ = 87131977 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (87148301) 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, 43574180 + 43574181.

It is an arithmetic number, because the mean of its divisors is an integer number (43574181).

Almost surely, 2^87148361 is an apocalyptic number.

It is an amenable number.

87148361 is a deficient number, since it is larger than the sum of its proper divisors (1).

87148361 is an equidigital number, since it uses as much as digits as its factorization.

87148361 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32256, while the sum is 38.

The square root of 87148361 is about 9335.3286498120. The cubic root of 87148361 is about 443.3564944778.

It can be divided in two parts, 871 and 48361, that multiplied together give a triangular number (42122431 = T₉₁₇₈).

The spelling of 87148361 in words is "eighty-seven million, one hundred forty-eight thousand, three hundred sixty-one".