85122077 has 4 divisors (see below), whose sum is σ = 90129276. Its totient is φ = 80114880.

The previous prime is 85122053. The next prime is 85122119. The reversal of 85122077 is 77022158.

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

It can be written as a sum of positive squares in 2 ways, for example, as 38800441 + 46321636 = 6229^2 + 6806^2 .

It is not a de Polignac number, because 85122077 - 2⁶ = 85122013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85122017) 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 in 3 ways as a sum of consecutive naturals, for example, 2503574 + ... + 2503607.

It is an arithmetic number, because the mean of its divisors is an integer number (22532319).

Almost surely, 2^85122077 is an apocalyptic number.

It is an amenable number.

85122077 is a deficient number, since it is larger than the sum of its proper divisors (5007199).

85122077 is a wasteful number, since it uses less digits than its factorization.

85122077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5007198.

The product of its (nonzero) digits is 7840, while the sum is 32.

The square root of 85122077 is about 9226.1626367629. The cubic root of 85122077 is about 439.8933574196.

The spelling of 85122077 in words is "eighty-five million, one hundred twenty-two thousand, seventy-seven".