85535771 has 2 divisors, whose sum is σ = 85535772. Its totient is φ = 85535770.

The previous prime is 85535767. The next prime is 85535797. The reversal of 85535771 is 17753558.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85535771 - 2² = 85535767 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (85535711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42767885 + 42767886.

It is an arithmetic number, because the mean of its divisors is an integer number (42767886).

Almost surely, 2^85535771 is an apocalyptic number.

85535771 is a deficient number, since it is larger than the sum of its proper divisors (1).

85535771 is an equidigital number, since it uses as much as digits as its factorization.

85535771 is an evil number, because the sum of its binary digits is even.

The product of its digits is 147000, while the sum is 41.

The square root of 85535771 is about 9248.5550763349. Note that the first 3 decimals coincide. The cubic root of 85535771 is about 440.6048345214.

The spelling of 85535771 in words is "eighty-five million, five hundred thirty-five thousand, seven hundred seventy-one".