85281530 has 16 divisors (see below), whose sum is σ = 154012320. Its totient is φ = 34000272.

The previous prime is 85281509. The next prime is 85281563. The reversal of 85281530 is 3518258.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10820 + ... + 16959.

It is an arithmetic number, because the mean of its divisors is an integer number (9625770).

Almost surely, 2^85281530 is an apocalyptic number.

85281530 is a deficient number, since it is larger than the sum of its proper divisors (68730790).

85281530 is a wasteful number, since it uses less digits than its factorization.

85281530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28093.

The product of its (nonzero) digits is 9600, while the sum is 32.

The square root of 85281530 is about 9234.7999436913. The cubic root of 85281530 is about 440.1678595074.

Adding to 85281530 its reverse (3518258), we get a palindrome (88799788).

The spelling of 85281530 in words is "eighty-five million, two hundred eighty-one thousand, five hundred thirty".