85446551 has 4 divisors (see below), whose sum is σ = 85476072. Its totient is φ = 85417032.

The previous prime is 85446533. The next prime is 85446577. The reversal of 85446551 is 15564458.

It is a happy number.

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 85446551 - 2²² = 81252247 is a prime.

It is a super-2 number, since 2×85446551² = 14602226155591202, 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 (85446511) 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 3 ways as a sum of consecutive naturals, for example, 9881 + ... + 16386.

It is an arithmetic number, because the mean of its divisors is an integer number (21369018).

Almost surely, 2^85446551 is an apocalyptic number.

85446551 is a deficient number, since it is larger than the sum of its proper divisors (29521).

85446551 is a wasteful number, since it uses less digits than its factorization.

85446551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29520.

The product of its digits is 96000, while the sum is 38.

The square root of 85446551 is about 9243.7303617100. The cubic root of 85446551 is about 440.4515869822.

The spelling of 85446551 in words is "eighty-five million, four hundred forty-six thousand, five hundred fifty-one".