87599321 has 2 divisors, whose sum is σ = 87599322. Its totient is φ = 87599320.

The previous prime is 87599287. The next prime is 87599339. The reversal of 87599321 is 12399578.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 71639296 + 15960025 = 8464^2 + 3995^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87599321 is a prime.

It is a super-2 number, since 2×87599321² = 15347282079322082, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (87599381) 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, 43799660 + 43799661.

It is an arithmetic number, because the mean of its divisors is an integer number (43799661).

Almost surely, 2^87599321 is an apocalyptic number.

It is an amenable number.

87599321 is a deficient number, since it is larger than the sum of its proper divisors (1).

87599321 is an equidigital number, since it uses as much as digits as its factorization.

87599321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 136080, while the sum is 44.

The square root of 87599321 is about 9359.4508920128. The cubic root of 87599321 is about 444.1199135708.

The spelling of 87599321 in words is "eighty-seven million, five hundred ninety-nine thousand, three hundred twenty-one".