30005001 has 24 divisors (see below), whose sum is σ = 46879560. Its totient is φ = 18383616.

The previous prime is 30004991. The next prime is 30005011. The reversal of 30005001 is 10050003.

It is an interprime number because it is at equal distance from previous prime (30004991) and next prime (30005011).

It can be written as a sum of positive squares in 4 ways, for example, as 585225 + 29419776 = 765^2 + 5424^2 .

It is a de Polignac number, because none of the positive numbers 2^k-30005001 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30005011) 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 in 23 ways as a sum of consecutive naturals, for example, 36685 + ... + 37493.

It is an arithmetic number, because the mean of its divisors is an integer number (1953315).

Almost surely, 2^30005001 is an apocalyptic number.

It is an amenable number.

30005001 is a deficient number, since it is larger than the sum of its proper divisors (16874559).

30005001 is a wasteful number, since it uses less digits than its factorization.

30005001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1145 (or 1142 counting only the distinct ones).

The product of its (nonzero) digits is 15, while the sum is 9.

The square root of 30005001 is about 5477.6820827792. The cubic root of 30005001 is about 310.7405154914.

Adding to 30005001 its reverse (10050003), we get a palindrome (40055004).

It can be divided in two parts, 3000 and 5001, that added together give a triangular number (8001 = T₁₂₆).

The spelling of 30005001 in words is "thirty million, five thousand, one".