85474757 has 2 divisors, whose sum is σ = 85474758. Its totient is φ = 85474756.

The previous prime is 85474729. The next prime is 85474771. The reversal of 85474757 is 75747458.

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., 55815841 + 29658916 = 7471^2 + 5446^2 .

It is a cyclic number.

It is not a de Polignac number, because 85474757 - 2¹⁰ = 85473733 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85474777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42737378 + 42737379.

It is an arithmetic number, because the mean of its divisors is an integer number (42737379).

Almost surely, 2^85474757 is an apocalyptic number.

It is an amenable number.

85474757 is a deficient number, since it is larger than the sum of its proper divisors (1).

85474757 is an equidigital number, since it uses as much as digits as its factorization.

85474757 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1097600, while the sum is 47.

The square root of 85474757 is about 9245.2559185779. The cubic root of 85474757 is about 440.5000461674.

The spelling of 85474757 in words is "eighty-five million, four hundred seventy-four thousand, seven hundred fifty-seven".