87225587 has 2 divisors, whose sum is σ = 87225588. Its totient is φ = 87225586.

The previous prime is 87225581. The next prime is 87225641. The reversal of 87225587 is 78552278.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 87225587 - 2⁸ = 87225331 is a prime.

It is not a weakly prime, because it can be changed into another prime (87225581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43612793 + 43612794.

It is an arithmetic number, because the mean of its divisors is an integer number (43612794).

Almost surely, 2^87225587 is an apocalyptic number.

87225587 is a deficient number, since it is larger than the sum of its proper divisors (1).

87225587 is an equidigital number, since it uses as much as digits as its factorization.

87225587 is an evil number, because the sum of its binary digits is even.

The product of its digits is 313600, while the sum is 44.

The square root of 87225587 is about 9339.4639567804. The cubic root of 87225587 is about 443.4874150511.

The spelling of 87225587 in words is "eighty-seven million, two hundred twenty-five thousand, five hundred eighty-seven".