85553331 has 4 divisors (see below), whose sum is σ = 114071112. Its totient is φ = 57035552.

The previous prime is 85553327. The next prime is 85553339. The reversal of 85553331 is 13335558.

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 85553331 - 2² = 85553327 is a prime.

It is a super-2 number, since 2×85553331² = 14638744890391122, which contains 22 as substring.

It is a nialpdrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 85553292 and 85553301.

It is not an unprimeable number, because it can be changed into a prime (85553339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14258886 + ... + 14258891.

It is an arithmetic number, because the mean of its divisors is an integer number (28517778).

Almost surely, 2^85553331 is an apocalyptic number.

85553331 is a deficient number, since it is larger than the sum of its proper divisors (28517781).

85553331 is a wasteful number, since it uses less digits than its factorization.

85553331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28517780.

The product of its digits is 27000, while the sum is 33.

The square root of 85553331 is about 9249.5043650998. The cubic root of 85553331 is about 440.6349836680.

Adding to 85553331 its reverse (13335558), we get a palindrome (98888889).

The spelling of 85553331 in words is "eighty-five million, five hundred fifty-three thousand, three hundred thirty-one".