30172039 has 2 divisors, whose sum is σ = 30172040. Its totient is φ = 30172038.

The previous prime is 30172013. The next prime is 30172063. The reversal of 30172039 is 93027103.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 30172039 - 2¹⁵ = 30139271 is a prime.

It is a zygodrome in base 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30172139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15086019 + 15086020.

It is an arithmetic number, because the mean of its divisors is an integer number (15086020).

Almost surely, 2^30172039 is an apocalyptic number.

30172039 is a deficient number, since it is larger than the sum of its proper divisors (1).

30172039 is an equidigital number, since it uses as much as digits as its factorization.

30172039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1134, while the sum is 25.

The square root of 30172039 is about 5492.9080640404. The cubic root of 30172039 is about 311.3160801188.

The spelling of 30172039 in words is "thirty million, one hundred seventy-two thousand, thirty-nine".