85838261 has 4 divisors (see below), whose sum is σ = 88158252. Its totient is φ = 83518272.

The previous prime is 85838251. The next prime is 85838267. The reversal of 85838261 is 16283858.

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 50495236 + 35343025 = 7106^2 + 5945^2 .

It is a cyclic number.

It is not a de Polignac number, because 85838261 - 2¹⁴ = 85821877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85838267) 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, 1159940 + ... + 1160013.

It is an arithmetic number, because the mean of its divisors is an integer number (22039563).

Almost surely, 2^85838261 is an apocalyptic number.

It is an amenable number.

85838261 is a deficient number, since it is larger than the sum of its proper divisors (2319991).

85838261 is a wasteful number, since it uses less digits than its factorization.

85838261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2319990.

The product of its digits is 92160, while the sum is 41.

The square root of 85838261 is about 9264.8940091077. The cubic root of 85838261 is about 441.1236106753.

The spelling of 85838261 in words is "eighty-five million, eight hundred thirty-eight thousand, two hundred sixty-one".