85791253 has 4 divisors (see below), whose sum is σ = 85830688. Its totient is φ = 85751820.

The previous prime is 85791241. The next prime is 85791281. The reversal of 85791253 is 35219758.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 85791253 - 2⁵ = 85791221 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 (85791203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16251 + ... + 20872.

It is an arithmetic number, because the mean of its divisors is an integer number (21457672).

Almost surely, 2^85791253 is an apocalyptic number.

It is an amenable number.

85791253 is a deficient number, since it is larger than the sum of its proper divisors (39435).

85791253 is a wasteful number, since it uses less digits than its factorization.

85791253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39434.

The product of its digits is 75600, while the sum is 40.

The square root of 85791253 is about 9262.3567735215. The cubic root of 85791253 is about 441.0430711236.

The spelling of 85791253 in words is "eighty-five million, seven hundred ninety-one thousand, two hundred fifty-three".