30097945 has 4 divisors (see below), whose sum is σ = 36117540. Its totient is φ = 24078352.

The previous prime is 30097913. The next prime is 30097967. The reversal of 30097945 is 54979003.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6390784 + 23707161 = 2528^2 + 4869^2 .

It is a cyclic number.

It is not a de Polignac number, because 30097945 - 2⁵ = 30097913 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3009790 + ... + 3009799.

It is an arithmetic number, because the mean of its divisors is an integer number (9029385).

Almost surely, 2^30097945 is an apocalyptic number.

It is an amenable number.

30097945 is a deficient number, since it is larger than the sum of its proper divisors (6019595).

30097945 is an equidigital number, since it uses as much as digits as its factorization.

30097945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6019594.

The product of its (nonzero) digits is 34020, while the sum is 37.

The square root of 30097945 is about 5486.1594034443. The cubic root of 30097945 is about 311.0610364655.

The spelling of 30097945 in words is "thirty million, ninety-seven thousand, nine hundred forty-five".