85131653 has 2 divisors, whose sum is σ = 85131654. Its totient is φ = 85131652.

The previous prime is 85131643. The next prime is 85131659. The reversal of 85131653 is 35613158.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54140164 + 30991489 = 7358^2 + 5567^2 .

It is a cyclic number.

It is not a de Polignac number, because 85131653 - 2⁴ = 85131637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85131659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42565826 + 42565827.

It is an arithmetic number, because the mean of its divisors is an integer number (42565827).

Almost surely, 2^85131653 is an apocalyptic number.

It is an amenable number.

85131653 is a deficient number, since it is larger than the sum of its proper divisors (1).

85131653 is an equidigital number, since it uses as much as digits as its factorization.

85131653 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10800, while the sum is 32.

The square root of 85131653 is about 9226.6815811536. The cubic root of 85131653 is about 439.9098523995.

The spelling of 85131653 in words is "eighty-five million, one hundred thirty-one thousand, six hundred fifty-three".