85223451 has 8 divisors (see below), whose sum is σ = 113902864. Its totient is φ = 56679840.

The previous prime is 85223449. The next prime is 85223459. The reversal of 85223451 is 15432258.

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

It is not a de Polignac number, because 85223451 - 2¹ = 85223449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85223459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32476 + ... + 35001.

It is an arithmetic number, because the mean of its divisors is an integer number (14237858).

Almost surely, 2^85223451 is an apocalyptic number.

85223451 is a deficient number, since it is larger than the sum of its proper divisors (28679413).

85223451 is a wasteful number, since it uses less digits than its factorization.

85223451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67901.

The product of its digits is 9600, while the sum is 30.

The square root of 85223451 is about 9231.6548354019. The cubic root of 85223451 is about 440.0679147922.

The spelling of 85223451 in words is "eighty-five million, two hundred twenty-three thousand, four hundred fifty-one".