30315245 has 8 divisors (see below), whose sum is σ = 36504216. Its totient is φ = 24168256.

The previous prime is 30315227. The next prime is 30315253. The reversal of 30315245 is 54251303.

It can be written as a sum of positive squares in 4 ways, for example, as 16491721 + 13823524 = 4061^2 + 3718^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30315245 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 30315245.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8882 + ... + 11811.

It is an arithmetic number, because the mean of its divisors is an integer number (4563027).

Almost surely, 2^30315245 is an apocalyptic number.

It is an amenable number.

30315245 is a deficient number, since it is larger than the sum of its proper divisors (6188971).

30315245 is a wasteful number, since it uses less digits than its factorization.

30315245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20991.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 30315245 is about 5505.9281688013. The cubic root of 30315245 is about 311.8078376480.

Adding to 30315245 its reverse (54251303), we get a palindrome (84566548).

The spelling of 30315245 in words is "thirty million, three hundred fifteen thousand, two hundred forty-five".