85473253 has 2 divisors, whose sum is σ = 85473254. Its totient is φ = 85473252.

The previous prime is 85473251. The next prime is 85473287. The reversal of 85473253 is 35237458.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 52099524 + 33373729 = 7218^2 + 5777^2 .

It is a cyclic number.

It is not a de Polignac number, because 85473253 - 2¹ = 85473251 is a prime.

Together with 85473251, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85473251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42736626 + 42736627.

It is an arithmetic number, because the mean of its divisors is an integer number (42736627).

Almost surely, 2^85473253 is an apocalyptic number.

It is an amenable number.

85473253 is a deficient number, since it is larger than the sum of its proper divisors (1).

85473253 is an equidigital number, since it uses as much as digits as its factorization.

85473253 is an evil number, because the sum of its binary digits is even.

The product of its digits is 100800, while the sum is 37.

The square root of 85473253 is about 9245.1745792062. The cubic root of 85473253 is about 440.4974624964.

The spelling of 85473253 in words is "eighty-five million, four hundred seventy-three thousand, two hundred fifty-three".