85388281 has 16 divisors (see below), whose sum is σ = 97070400. Its totient is φ = 74425600.

The previous prime is 85388257. The next prime is 85388293. The reversal of 85388281 is 18288358.

It is a cyclic number.

It is not a de Polignac number, because 85388281 - 2¹⁵ = 85355513 is a prime.

It is a super-2 number, since 2×85388281² = 14582317064269922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85388201) 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 15 ways as a sum of consecutive naturals, for example, 25005 + ... + 28213.

It is an arithmetic number, because the mean of its divisors is an integer number (6066900).

Almost surely, 2^85388281 is an apocalyptic number.

It is an amenable number.

85388281 is a deficient number, since it is larger than the sum of its proper divisors (11682119).

85388281 is a wasteful number, since it uses less digits than its factorization.

85388281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3320.

The product of its digits is 122880, while the sum is 43.

The square root of 85388281 is about 9240.5779581150. The cubic root of 85388281 is about 440.3514427011.

The spelling of 85388281 in words is "eighty-five million, three hundred eighty-eight thousand, two hundred eighty-one".