85078253 has 4 divisors (see below), whose sum is σ = 91622748. Its totient is φ = 78533760.

The previous prime is 85078249. The next prime is 85078261. The reversal of 85078253 is 35287058.

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 7409284 + 77668969 = 2722^2 + 8813^2 .

It is a cyclic number.

It is not a de Polignac number, because 85078253 - 2² = 85078249 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 (85078223) 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, 3272228 + ... + 3272253.

It is an arithmetic number, because the mean of its divisors is an integer number (22905687).

Almost surely, 2^85078253 is an apocalyptic number.

It is an amenable number.

85078253 is a deficient number, since it is larger than the sum of its proper divisors (6544495).

85078253 is a wasteful number, since it uses less digits than its factorization.

85078253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6544494.

The product of its (nonzero) digits is 67200, while the sum is 38.

The square root of 85078253 is about 9223.7873457707. The cubic root of 85078253 is about 439.8178533262.

The spelling of 85078253 in words is "eighty-five million, seventy-eight thousand, two hundred fifty-three".