30500945 has 4 divisors (see below), whose sum is σ = 36601140. Its totient is φ = 24400752.

The previous prime is 30500927. The next prime is 30500959. The reversal of 30500945 is 54900503.

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 4194304 + 26306641 = 2048^2 + 5129^2 .

It is a cyclic number.

It is not a de Polignac number, because 30500945 - 2⁸ = 30500689 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, 3050090 + ... + 3050099.

It is an arithmetic number, because the mean of its divisors is an integer number (9150285).

Almost surely, 2^30500945 is an apocalyptic number.

It is an amenable number.

30500945 is a deficient number, since it is larger than the sum of its proper divisors (6100195).

30500945 is an equidigital number, since it uses as much as digits as its factorization.

30500945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6100194.

The product of its (nonzero) digits is 2700, while the sum is 26.

The square root of 30500945 is about 5522.7660642109. The cubic root of 30500945 is about 312.4432152822.

The spelling of 30500945 in words is "thirty million, five hundred thousand, nine hundred forty-five".