85130933 has 2 divisors, whose sum is σ = 85130934. Its totient is φ = 85130932.

The previous prime is 85130911. The next prime is 85130971. The reversal of 85130933 is 33903158.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 65399569 + 19731364 = 8087^2 + 4442^2 .

It is a cyclic number.

It is not a de Polignac number, because 85130933 - 2⁶ = 85130869 is a prime.

It is equal to p_4950842 and since 85130933 and 4950842 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 85130933.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85130233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42565466 + 42565467.

It is an arithmetic number, because the mean of its divisors is an integer number (42565467).

Almost surely, 2^85130933 is an apocalyptic number.

It is an amenable number.

85130933 is a deficient number, since it is larger than the sum of its proper divisors (1).

85130933 is an equidigital number, since it uses as much as digits as its factorization.

85130933 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9720, while the sum is 32.

The square root of 85130933 is about 9226.6425637932. The cubic root of 85130933 is about 439.9086122185.

The spelling of 85130933 in words is "eighty-five million, one hundred thirty thousand, nine hundred thirty-three".