85238497 has 2 divisors, whose sum is σ = 85238498. Its totient is φ = 85238496.

The previous prime is 85238441. The next prime is 85238509. The reversal of 85238497 is 79483258.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 80568576 + 4669921 = 8976^2 + 2161^2 .

It is a cyclic number.

It is not a de Polignac number, because 85238497 - 2⁷ = 85238369 is a prime.

It is not a weakly prime, because it can be changed into another prime (85238407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42619248 + 42619249.

It is an arithmetic number, because the mean of its divisors is an integer number (42619249).

Almost surely, 2^85238497 is an apocalyptic number.

It is an amenable number.

85238497 is a deficient number, since it is larger than the sum of its proper divisors (1).

85238497 is an equidigital number, since it uses as much as digits as its factorization.

85238497 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 483840, while the sum is 46.

The square root of 85238497 is about 9232.4697129208. The cubic root of 85238497 is about 440.0938109203.

It can be divided in two parts, 8523 and 8497, that added together give a triangular number (17020 = T₁₈₄).

The spelling of 85238497 in words is "eighty-five million, two hundred thirty-eight thousand, four hundred ninety-seven".