85522311 has 20 divisors (see below), whose sum is σ = 146007312. Its totient is φ = 48869568.

The previous prime is 85522301. The next prime is 85522321. The reversal of 85522311 is 11322558.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (85522301) and next prime (85522321).

It is not a de Polignac number, because 85522311 - 2⁵ = 85522279 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85522301) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 74850 + ... + 75983.

Almost surely, 2^85522311 is an apocalyptic number.

85522311 is a gapful number since it is divisible by the number (81) formed by its first and last digit.

85522311 is a deficient number, since it is larger than the sum of its proper divisors (60485001).

85522311 is a wasteful number, since it uses less digits than its factorization.

85522311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150852 (or 150843 counting only the distinct ones).

The product of its digits is 2400, while the sum is 27.

The square root of 85522311 is about 9247.8273664683. The cubic root of 85522311 is about 440.5817219603.

Adding to 85522311 its reverse (11322558), we get a palindrome (96844869).

The spelling of 85522311 in words is "eighty-five million, five hundred twenty-two thousand, three hundred eleven".