85222755 has 24 divisors (see below), whose sum is σ = 149748768. Its totient is φ = 44827776.

The previous prime is 85222721. The next prime is 85222759. The reversal of 85222755 is 55722258.

It is not a de Polignac number, because 85222755 - 2⁸ = 85222499 is a prime.

It is not an unprimeable number, because it can be changed into a prime (85222759) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9687 + ... + 16256.

It is an arithmetic number, because the mean of its divisors is an integer number (6239532).

Almost surely, 2^85222755 is an apocalyptic number.

85222755 is a deficient number, since it is larger than the sum of its proper divisors (64526013).

85222755 is a wasteful number, since it uses less digits than its factorization.

85222755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26027 (or 26024 counting only the distinct ones).

The product of its digits is 56000, while the sum is 36.

The square root of 85222755 is about 9231.6171389416. The cubic root of 85222755 is about 440.0667168117.

The spelling of 85222755 in words is "eighty-five million, two hundred twenty-two thousand, seven hundred fifty-five".