30825917 has 2 divisors, whose sum is σ = 30825918. Its totient is φ = 30825916.

The previous prime is 30825901. The next prime is 30825953. The reversal of 30825917 is 71952803.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23367556 + 7458361 = 4834^2 + 2731^2 .

It is a cyclic number.

It is not a de Polignac number, because 30825917 - 2⁴ = 30825901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30825017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15412958 + 15412959.

It is an arithmetic number, because the mean of its divisors is an integer number (15412959).

Almost surely, 2^30825917 is an apocalyptic number.

It is an amenable number.

30825917 is a deficient number, since it is larger than the sum of its proper divisors (1).

30825917 is an equidigital number, since it uses as much as digits as its factorization.

30825917 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 30825917 is about 5552.1092388389. The cubic root of 30825917 is about 313.5489385500.

The spelling of 30825917 in words is "thirty million, eight hundred twenty-five thousand, nine hundred seventeen".