30045997 has 4 divisors (see below), whose sum is σ = 30457660. Its totient is φ = 29634336.

The previous prime is 30045941. The next prime is 30046007. The reversal of 30045997 is 79954003.

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 5731236 + 24314761 = 2394^2 + 4931^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30045997 is a prime.

It is a super-3 number, since 3×30045997³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30045097) 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, 205722 + ... + 205867.

It is an arithmetic number, because the mean of its divisors is an integer number (7614415).

Almost surely, 2^30045997 is an apocalyptic number.

It is an amenable number.

30045997 is a deficient number, since it is larger than the sum of its proper divisors (411663).

30045997 is an equidigital number, since it uses as much as digits as its factorization.

30045997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 411662.

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

The square root of 30045997 is about 5481.4228992115. The cubic root of 30045997 is about 310.8819732518.

The spelling of 30045997 in words is "thirty million, forty-five thousand, nine hundred ninety-seven".