87259321 has 2 divisors, whose sum is σ = 87259322. Its totient is φ = 87259320.

The previous prime is 87259223. The next prime is 87259339. The reversal of 87259321 is 12395278.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 65028096 + 22231225 = 8064^2 + 4715^2 .

It is a cyclic number.

It is not a de Polignac number, because 87259321 - 2²³ = 78870713 is a prime.

It is a super-2 number, since 2×87259321² = 15228378202762082, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (87259121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43629660 + 43629661.

It is an arithmetic number, because the mean of its divisors is an integer number (43629661).

Almost surely, 2^87259321 is an apocalyptic number.

It is an amenable number.

87259321 is a deficient number, since it is larger than the sum of its proper divisors (1).

87259321 is an equidigital number, since it uses as much as digits as its factorization.

87259321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30240, while the sum is 37.

The square root of 87259321 is about 9341.2697745007. The cubic root of 87259321 is about 443.5445797614.

The spelling of 87259321 in words is "eighty-seven million, two hundred fifty-nine thousand, three hundred twenty-one".