30075997 has 4 divisors (see below), whose sum is σ = 34372576. Its totient is φ = 25779420.

The previous prime is 30075979. The next prime is 30076003. The reversal of 30075997 is 79957003.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30075997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30075937) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2148279 + ... + 2148292.

It is an arithmetic number, because the mean of its divisors is an integer number (8593144).

Almost surely, 2^30075997 is an apocalyptic number.

It is an amenable number.

30075997 is a deficient number, since it is larger than the sum of its proper divisors (4296579).

30075997 is an equidigital number, since it uses as much as digits as its factorization.

30075997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4296578.

The product of its (nonzero) digits is 59535, while the sum is 40.

The square root of 30075997 is about 5484.1587322031. The cubic root of 30075997 is about 310.9854075169.

The spelling of 30075997 in words is "thirty million, seventy-five thousand, nine hundred ninety-seven".