85030237 has 2 divisors, whose sum is σ = 85030238. Its totient is φ = 85030236.

The previous prime is 85030223. The next prime is 85030247. The reversal of 85030237 is 73203058.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 82973881 + 2056356 = 9109^2 + 1434^2 .

It is a cyclic number.

It is not a de Polignac number, because 85030237 - 2⁷ = 85030109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85030217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42515118 + 42515119.

It is an arithmetic number, because the mean of its divisors is an integer number (42515119).

Almost surely, 2^85030237 is an apocalyptic number.

It is an amenable number.

85030237 is a deficient number, since it is larger than the sum of its proper divisors (1).

85030237 is an equidigital number, since it uses as much as digits as its factorization.

85030237 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 85030237 is about 9221.1841430480. The cubic root of 85030237 is about 439.7350970894.

The spelling of 85030237 in words is "eighty-five million, thirty thousand, two hundred thirty-seven".