85494757 has 2 divisors, whose sum is σ = 85494758. Its totient is φ = 85494756.

The previous prime is 85494719. The next prime is 85494767. The reversal of 85494757 is 75749458.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 85488516 + 6241 = 9246^2 + 79^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85494757 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 85494757.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85494767) 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, 42747378 + 42747379.

It is an arithmetic number, because the mean of its divisors is an integer number (42747379).

Almost surely, 2^85494757 is an apocalyptic number.

It is an amenable number.

85494757 is a deficient number, since it is larger than the sum of its proper divisors (1).

85494757 is an equidigital number, since it uses as much as digits as its factorization.

85494757 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1411200, while the sum is 49.

The square root of 85494757 is about 9246.3374911367. The cubic root of 85494757 is about 440.5344006138.

The spelling of 85494757 in words is "eighty-five million, four hundred ninety-four thousand, seven hundred fifty-seven".