85554719 has 4 divisors (see below), whose sum is σ = 86179344. Its totient is φ = 84930096.

The previous prime is 85554713. The next prime is 85554731. The reversal of 85554719 is 91745558.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 85554719 - 2⁸ = 85554463 is a prime.

It is a super-2 number, since 2×85554719² = 14639219886337922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 85554719.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85554713) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 312107 + ... + 312380.

It is an arithmetic number, because the mean of its divisors is an integer number (21544836).

Almost surely, 2^85554719 is an apocalyptic number.

85554719 is a deficient number, since it is larger than the sum of its proper divisors (624625).

85554719 is a wasteful number, since it uses less digits than its factorization.

85554719 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 624624.

The product of its digits is 252000, while the sum is 44.

The square root of 85554719 is about 9249.5793958428. The cubic root of 85554719 is about 440.6373665795.

The spelling of 85554719 in words is "eighty-five million, five hundred fifty-four thousand, seven hundred nineteen".