85428955 has 4 divisors (see below), whose sum is σ = 102514752. Its totient is φ = 68343160.

The previous prime is 85428947. The next prime is 85428989. The reversal of 85428955 is 55982458.

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

It is not a de Polignac number, because 85428955 - 2³ = 85428947 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8542891 + ... + 8542900.

It is an arithmetic number, because the mean of its divisors is an integer number (25628688).

Almost surely, 2^85428955 is an apocalyptic number.

85428955 is a deficient number, since it is larger than the sum of its proper divisors (17085797).

85428955 is a wasteful number, since it uses less digits than its factorization.

85428955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17085796.

The product of its digits is 576000, while the sum is 46.

The square root of 85428955 is about 9242.7785324544. The cubic root of 85428955 is about 440.4213508556.

The spelling of 85428955 in words is "eighty-five million, four hundred twenty-eight thousand, nine hundred fifty-five".