85238261 has 8 divisors (see below), whose sum is σ = 86437344. Its totient is φ = 84043440.

The previous prime is 85238227. The next prime is 85238297. The reversal of 85238261 is 16283258.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 85238261 - 2²² = 81043957 is a prime.

It is a super-2 number, since 2×85238261² = 14531122276608242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85238761) 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 7 ways as a sum of consecutive naturals, for example, 72206 + ... + 73376.

It is an arithmetic number, because the mean of its divisors is an integer number (10804668).

Almost surely, 2^85238261 is an apocalyptic number.

It is an amenable number.

85238261 is a deficient number, since it is larger than the sum of its proper divisors (1199083).

85238261 is a wasteful number, since it uses less digits than its factorization.

85238261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2131.

The product of its digits is 23040, while the sum is 35.

The square root of 85238261 is about 9232.4569319331. The cubic root of 85238261 is about 440.0934047571.

The spelling of 85238261 in words is "eighty-five million, two hundred thirty-eight thousand, two hundred sixty-one".