85138033 has 4 divisors (see below), whose sum is σ = 85328100. Its totient is φ = 84947968.

The previous prime is 85138021. The next prime is 85138037. The reversal of 85138033 is 33083158.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 31438449 + 53699584 = 5607^2 + 7328^2 .

It is a cyclic number.

It is not a de Polignac number, because 85138033 - 2¹³ = 85129841 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 85137986 and 85138004.

It is not an unprimeable number, because it can be changed into a prime (85138037) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 94360 + ... + 95257.

It is an arithmetic number, because the mean of its divisors is an integer number (21332025).

Almost surely, 2^85138033 is an apocalyptic number.

It is an amenable number.

85138033 is a deficient number, since it is larger than the sum of its proper divisors (190067).

85138033 is a wasteful number, since it uses less digits than its factorization.

85138033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190066.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 85138033 is about 9227.0273111116. The cubic root of 85138033 is about 439.9208414760.

The spelling of 85138033 in words is "eighty-five million, one hundred thirty-eight thousand, thirty-three".