85538533 has 2 divisors, whose sum is σ = 85538534. Its totient is φ = 85538532.

The previous prime is 85538507. The next prime is 85538539. The reversal of 85538533 is 33583558.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 84971524 + 567009 = 9218^2 + 753^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85538533 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85538539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42769266 + 42769267.

It is an arithmetic number, because the mean of its divisors is an integer number (42769267).

Almost surely, 2^85538533 is an apocalyptic number.

It is an amenable number.

85538533 is a deficient number, since it is larger than the sum of its proper divisors (1).

85538533 is an equidigital number, since it uses as much as digits as its factorization.

85538533 is an evil number, because the sum of its binary digits is even.

The product of its digits is 216000, while the sum is 40.

The square root of 85538533 is about 9248.7043957519. The cubic root of 85538533 is about 440.6095769328.

The spelling of 85538533 in words is "eighty-five million, five hundred thirty-eight thousand, five hundred thirty-three".