85065551 has 8 divisors (see below), whose sum is σ = 86668800. Its totient is φ = 83467800.

The previous prime is 85065521. The next prime is 85065593. The reversal of 85065551 is 15556058.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85065551 is a prime.

It is a super-2 number, since 2×85065551² = 14472295933867202, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85065511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42626 + ... + 44576.

It is an arithmetic number, because the mean of its divisors is an integer number (10833600).

Almost surely, 2^85065551 is an apocalyptic number.

85065551 is a deficient number, since it is larger than the sum of its proper divisors (1603249).

85065551 is a wasteful number, since it uses less digits than its factorization.

85065551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2749.

The product of its (nonzero) digits is 30000, while the sum is 35.

The square root of 85065551 is about 9223.0987742732. The cubic root of 85065551 is about 439.7959642840.

The spelling of 85065551 in words is "eighty-five million, sixty-five thousand, five hundred fifty-one".