85569371 has 2 divisors, whose sum is σ = 85569372. Its totient is φ = 85569370.

The previous prime is 85569329. The next prime is 85569377. The reversal of 85569371 is 17396558.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85569371 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (85569377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42784685 + 42784686.

It is an arithmetic number, because the mean of its divisors is an integer number (42784686).

Almost surely, 2^85569371 is an apocalyptic number.

85569371 is a deficient number, since it is larger than the sum of its proper divisors (1).

85569371 is an equidigital number, since it uses as much as digits as its factorization.

85569371 is an evil number, because the sum of its binary digits is even.

The product of its digits is 226800, while the sum is 44.

The square root of 85569371 is about 9250.3713979494. The cubic root of 85569371 is about 440.6625194884.

The spelling of 85569371 in words is "eighty-five million, five hundred sixty-nine thousand, three hundred seventy-one".