85415249 has 2 divisors, whose sum is σ = 85415250. Its totient is φ = 85415248.

The previous prime is 85415227. The next prime is 85415263. The reversal of 85415249 is 94251458.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48205249 + 37210000 = 6943^2 + 6100^2 .

It is a cyclic number.

It is not a de Polignac number, because 85415249 - 2¹² = 85411153 is a prime.

It is a Chen prime.

It is a weakly prime.

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, 42707624 + 42707625.

It is an arithmetic number, because the mean of its divisors is an integer number (42707625).

Almost surely, 2^85415249 is an apocalyptic number.

It is an amenable number.

85415249 is a deficient number, since it is larger than the sum of its proper divisors (1).

85415249 is an equidigital number, since it uses as much as digits as its factorization.

85415249 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 57600, while the sum is 38.

The square root of 85415249 is about 9242.0370590038. The cubic root of 85415249 is about 440.3977962428.

The spelling of 85415249 in words is "eighty-five million, four hundred fifteen thousand, two hundred forty-nine".