85541597 has 2 divisors, whose sum is σ = 85541598. Its totient is φ = 85541596.

The previous prime is 85541593. The next prime is 85541609. The reversal of 85541597 is 79514558.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 79905721 + 5635876 = 8939^2 + 2374^2 .

It is a cyclic number.

It is not a de Polignac number, because 85541597 - 2² = 85541593 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85541593) 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, 42770798 + 42770799.

It is an arithmetic number, because the mean of its divisors is an integer number (42770799).

Almost surely, 2^85541597 is an apocalyptic number.

It is an amenable number.

85541597 is a deficient number, since it is larger than the sum of its proper divisors (1).

85541597 is an equidigital number, since it uses as much as digits as its factorization.

85541597 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 252000, while the sum is 44.

The square root of 85541597 is about 9248.8700390913. The cubic root of 85541597 is about 440.6148377651.

The spelling of 85541597 in words is "eighty-five million, five hundred forty-one thousand, five hundred ninety-seven".