87552217 has 2 divisors, whose sum is σ = 87552218. Its totient is φ = 87552216.

The previous prime is 87552203. The next prime is 87552233. The reversal of 87552217 is 71225578.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 85581001 + 1971216 = 9251^2 + 1404^2 .

It is a cyclic number.

It is not a de Polignac number, because 87552217 - 2⁷ = 87552089 is a prime.

It is not a weakly prime, because it can be changed into another prime (87555217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43776108 + 43776109.

It is an arithmetic number, because the mean of its divisors is an integer number (43776109).

Almost surely, 2^87552217 is an apocalyptic number.

It is an amenable number.

87552217 is a deficient number, since it is larger than the sum of its proper divisors (1).

87552217 is an equidigital number, since it uses as much as digits as its factorization.

87552217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 39200, while the sum is 37.

The square root of 87552217 is about 9356.9341667023. The cubic root of 87552217 is about 444.0402950876.

The spelling of 87552217 in words is "eighty-seven million, five hundred fifty-two thousand, two hundred seventeen".