85122387 has 16 divisors (see below), whose sum is σ = 144122880. Its totient is φ = 48641256.

The previous prime is 85122353. The next prime is 85122391. The reversal of 85122387 is 78322158.

It is not a de Polignac number, because 85122387 - 2⁷ = 85122259 is a prime.

It is not an unprimeable number, because it can be changed into a prime (85132387) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 225003 + ... + 225380.

It is an arithmetic number, because the mean of its divisors is an integer number (9007680).

Almost surely, 2^85122387 is an apocalyptic number.

85122387 is a deficient number, since it is larger than the sum of its proper divisors (59000493).

85122387 is a wasteful number, since it uses less digits than its factorization.

85122387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 450399 (or 450393 counting only the distinct ones).

The product of its digits is 26880, while the sum is 36.

The square root of 85122387 is about 9226.1794367983. The cubic root of 85122387 is about 439.8938914244.

The spelling of 85122387 in words is "eighty-five million, one hundred twenty-two thousand, three hundred eighty-seven".