87488491 has 2 divisors, whose sum is σ = 87488492. Its totient is φ = 87488490.

The previous prime is 87488449. The next prime is 87488497. The reversal of 87488491 is 19488478.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 87488491 - 2¹³ = 87480299 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (87488497) 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, 43744245 + 43744246.

It is an arithmetic number, because the mean of its divisors is an integer number (43744246).

Almost surely, 2^87488491 is an apocalyptic number.

87488491 is a deficient number, since it is larger than the sum of its proper divisors (1).

87488491 is an equidigital number, since it uses as much as digits as its factorization.

87488491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 516096, while the sum is 49.

The square root of 87488491 is about 9353.5282647779. The cubic root of 87488491 is about 443.9325354709.

The spelling of 87488491 in words is "eighty-seven million, four hundred eighty-eight thousand, four hundred ninety-one".