85776155 has 4 divisors (see below), whose sum is σ = 102931392. Its totient is φ = 68620920.

The previous prime is 85776151. The next prime is 85776157. The reversal of 85776155 is 55167758.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 85776155 - 2² = 85776151 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85776151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8577611 + ... + 8577620.

It is an arithmetic number, because the mean of its divisors is an integer number (25732848).

Almost surely, 2^85776155 is an apocalyptic number.

85776155 is a deficient number, since it is larger than the sum of its proper divisors (17155237).

85776155 is a wasteful number, since it uses less digits than its factorization.

85776155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17155236.

The product of its digits is 294000, while the sum is 44.

The square root of 85776155 is about 9261.5417183102. The cubic root of 85776155 is about 441.0171972390.

The spelling of 85776155 in words is "eighty-five million, seven hundred seventy-six thousand, one hundred fifty-five".