87485249 has 2 divisors, whose sum is σ = 87485250. Its totient is φ = 87485248.

The previous prime is 87485221. The next prime is 87485269. The reversal of 87485249 is 94258478.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 87291649 + 193600 = 9343^2 + 440^2 .

It is a cyclic number.

It is not a de Polignac number, because 87485249 - 2¹² = 87481153 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (87485219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43742624 + 43742625.

It is an arithmetic number, because the mean of its divisors is an integer number (43742625).

Almost surely, 2^87485249 is an apocalyptic number.

It is an amenable number.

87485249 is a deficient number, since it is larger than the sum of its proper divisors (1).

87485249 is an equidigital number, since it uses as much as digits as its factorization.

87485249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 645120, while the sum is 47.

The square root of 87485249 is about 9353.3549595854. The cubic root of 87485249 is about 443.9270519037.

The spelling of 87485249 in words is "eighty-seven million, four hundred eighty-five thousand, two hundred forty-nine".