85722111 has 8 divisors (see below), whose sum is σ = 126995760. Its totient is φ = 57148056.

The previous prime is 85722107. The next prime is 85722113. The reversal of 85722111 is 11122758.

It is not a de Polignac number, because 85722111 - 2² = 85722107 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 3174893 = 85722111 / (8 + 5 + 7 + 2 + 2 + 1 + 1 + 1).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85722113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1587420 + ... + 1587473.

It is an arithmetic number, because the mean of its divisors is an integer number (15874470).

Almost surely, 2^85722111 is an apocalyptic number.

85722111 is a deficient number, since it is larger than the sum of its proper divisors (41273649).

85722111 is a wasteful number, since it uses less digits than its factorization.

85722111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3174902 (or 3174896 counting only the distinct ones).

The product of its digits is 1120, while the sum is 27.

The square root of 85722111 is about 9258.6236018104. The cubic root of 85722111 is about 440.9245555609.

Adding to 85722111 its reverse (11122758), we get a palindrome (96844869).

The spelling of 85722111 in words is "eighty-five million, seven hundred twenty-two thousand, one hundred eleven".