87215203 has 2 divisors, whose sum is σ = 87215204. Its totient is φ = 87215202.

The previous prime is 87215201. The next prime is 87215231. The reversal of 87215203 is 30251278.

It is an a-pointer prime, because the next prime (87215231) can be obtained adding 87215203 to its sum of digits (28).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 87215203 - 2¹ = 87215201 is a prime.

Together with 87215201, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (87215201) 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, 43607601 + 43607602.

It is an arithmetic number, because the mean of its divisors is an integer number (43607602).

Almost surely, 2^87215203 is an apocalyptic number.

87215203 is a deficient number, since it is larger than the sum of its proper divisors (1).

87215203 is an equidigital number, since it uses as much as digits as its factorization.

87215203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 87215203 is about 9338.9080196777. The cubic root of 87215203 is about 443.4698156432.

It can be divided in two parts, 8721 and 5203, that added together give a square (13924 = 118²).

The spelling of 87215203 in words is "eighty-seven million, two hundred fifteen thousand, two hundred three".