85161497 has 2 divisors, whose sum is σ = 85161498. Its totient is φ = 85161496.

The previous prime is 85161481. The next prime is 85161511. The reversal of 85161497 is 79416158.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64947481 + 20214016 = 8059^2 + 4496^2 .

It is a cyclic number.

It is not a de Polignac number, because 85161497 - 2⁴ = 85161481 is a prime.

It is not a weakly prime, because it can be changed into another prime (85161437) by changing a digit.

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, 42580748 + 42580749.

It is an arithmetic number, because the mean of its divisors is an integer number (42580749).

Almost surely, 2^85161497 is an apocalyptic number.

It is an amenable number.

85161497 is a deficient number, since it is larger than the sum of its proper divisors (1).

85161497 is an equidigital number, since it uses as much as digits as its factorization.

85161497 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 60480, while the sum is 41.

The square root of 85161497 is about 9228.2987056120. The cubic root of 85161497 is about 439.9612517531.

It can be divided in two parts, 85161 and 497, that added together give a palindrome (85658).

The spelling of 85161497 in words is "eighty-five million, one hundred sixty-one thousand, four hundred ninety-seven".