85519787 has 2 divisors, whose sum is σ = 85519788. Its totient is φ = 85519786.

The previous prime is 85519769. The next prime is 85519823. The reversal of 85519787 is 78791558.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85519787 - 2⁶ = 85519723 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (85519717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42759893 + 42759894.

It is an arithmetic number, because the mean of its divisors is an integer number (42759894).

Almost surely, 2^85519787 is an apocalyptic number.

85519787 is a deficient number, since it is larger than the sum of its proper divisors (1).

85519787 is an equidigital number, since it uses as much as digits as its factorization.

85519787 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 705600, while the sum is 50.

The square root of 85519787 is about 9247.6909009763. The cubic root of 85519787 is about 440.5773876559.

The spelling of 85519787 in words is "eighty-five million, five hundred nineteen thousand, seven hundred eighty-seven".