85255691 has 8 divisors (see below), whose sum is σ = 87576384. Its totient is φ = 82965960.

The previous prime is 85255661. The next prime is 85255693. The reversal of 85255691 is 19655258.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 85255691 - 2¹⁴ = 85239307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85255693) 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, 2105 + ... + 13226.

It is an arithmetic number, because the mean of its divisors is an integer number (10947048).

Almost surely, 2^85255691 is an apocalyptic number.

85255691 is a deficient number, since it is larger than the sum of its proper divisors (2320693).

85255691 is a wasteful number, since it uses less digits than its factorization.

85255691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15481.

The product of its digits is 108000, while the sum is 41.

The square root of 85255691 is about 9233.4008360950. The cubic root of 85255691 is about 440.1234003059.

The spelling of 85255691 in words is "eighty-five million, two hundred fifty-five thousand, six hundred ninety-one".