87181153 has 2 divisors, whose sum is σ = 87181154. Its totient is φ = 87181152.

The previous prime is 87181111. The next prime is 87181189. The reversal of 87181153 is 35118178.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 80586529 + 6594624 = 8977^2 + 2568^2 .

It is a cyclic number.

It is not a de Polignac number, because 87181153 - 2²¹ = 85084001 is a prime.

It is not a weakly prime, because it can be changed into another prime (87181103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43590576 + 43590577.

It is an arithmetic number, because the mean of its divisors is an integer number (43590577).

Almost surely, 2^87181153 is an apocalyptic number.

It is an amenable number.

87181153 is a deficient number, since it is larger than the sum of its proper divisors (1).

87181153 is an equidigital number, since it uses as much as digits as its factorization.

87181153 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6720, while the sum is 34.

The square root of 87181153 is about 9337.0848234339. The cubic root of 87181153 is about 443.4120959176.

The spelling of 87181153 in words is "eighty-seven million, one hundred eighty-one thousand, one hundred fifty-three".