85151893 has 2 divisors, whose sum is σ = 85151894. Its totient is φ = 85151892.

The previous prime is 85151887. The next prime is 85151897. The reversal of 85151893 is 39815158.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 74770609 + 10381284 = 8647^2 + 3222^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85151893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85151897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42575946 + 42575947.

It is an arithmetic number, because the mean of its divisors is an integer number (42575947).

Almost surely, 2^85151893 is an apocalyptic number.

It is an amenable number.

85151893 is a deficient number, since it is larger than the sum of its proper divisors (1).

85151893 is an equidigital number, since it uses as much as digits as its factorization.

85151893 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 43200, while the sum is 40.

The square root of 85151893 is about 9227.7783350057. The cubic root of 85151893 is about 439.9447124058.

The spelling of 85151893 in words is "eighty-five million, one hundred fifty-one thousand, eight hundred ninety-three".