85571701 has 2 divisors, whose sum is σ = 85571702. Its totient is φ = 85571700.

The previous prime is 85571669. The next prime is 85571719. The reversal of 85571701 is 10717558.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 81270225 + 4301476 = 9015^2 + 2074^2 .

It is a cyclic number.

It is not a de Polignac number, because 85571701 - 2⁵ = 85571669 is a prime.

It is equal to p_4975036 and since 85571701 and 4975036 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85571741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42785850 + 42785851.

It is an arithmetic number, because the mean of its divisors is an integer number (42785851).

Almost surely, 2^85571701 is an apocalyptic number.

It is an amenable number.

85571701 is a deficient number, since it is larger than the sum of its proper divisors (1).

85571701 is an equidigital number, since it uses as much as digits as its factorization.

85571701 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9800, while the sum is 34.

The square root of 85571701 is about 9250.4973379813. The cubic root of 85571701 is about 440.6665191063. Note that the first 3 decimals are identical.

The spelling of 85571701 in words is "eighty-five million, five hundred seventy-one thousand, seven hundred one".