85857253 has 2 divisors, whose sum is σ = 85857254. Its totient is φ = 85857252.

The previous prime is 85857221. The next prime is 85857263. The reversal of 85857253 is 35275858.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 85710564 + 146689 = 9258^2 + 383^2 .

It is a cyclic number.

It is not a de Polignac number, because 85857253 - 2⁵ = 85857221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85857263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42928626 + 42928627.

It is an arithmetic number, because the mean of its divisors is an integer number (42928627).

Almost surely, 2^85857253 is an apocalyptic number.

It is an amenable number.

85857253 is a deficient number, since it is larger than the sum of its proper divisors (1).

85857253 is an equidigital number, since it uses as much as digits as its factorization.

85857253 is an evil number, because the sum of its binary digits is even.

The product of its digits is 336000, while the sum is 43.

The square root of 85857253 is about 9265.9188966880. The cubic root of 85857253 is about 441.1561416302.

The spelling of 85857253 in words is "eighty-five million, eight hundred fifty-seven thousand, two hundred fifty-three".